Literaturverzeichnis

1. Agster N, Nandi G (2019): Seltene Vogelarten in Baden-Württemberg 2016. Ornithol. Jh. Bad.-Württ. 35: 63–75 (2019)
2. Ainley DG et al. (2020). Common Murre (Uria aalge), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. 
3. Ainley DG, Nettleship DN, Carter HR, Storey AE (2020). Common Murre (Uria aalge), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA.
4. Ainley, D. G., D. N. Nettleship, and A. E. Storey (2021). Common Murre (Uria aalge), version 2.0. In Birds of the World (S. M. Billerman, P. G. Rodewald, and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.commur.02
5. Aliabadian M et al.  (2012): Convergent evolution of morphological and ecological traits in the open-habitat chat complex (Aves, Muscicapidae: Saxicolinae). Mol. Phylogenet. Evol. 65: 35-45
6. Alström P, Mild K (2010): Pipits & Wagtails of Europe and North America. Christophe Helm, London. Bloomsbury Publishing. Kindle-Version.
7. Anger F et al. (2020): Bestandsrückgang und Habitatnutzung bei der Alpenringdrossel Turdus torquatus alpestris im Nordschwarzwald (Ba-Wü). Ornith. Beobachter. 117. 38-53. 
8. Anteau, M. J., J. DeVink, D. N. Koons, J. E. Austin, C. M. Custer, and A. D. Afton (2020). Lesser Scaup (Aythya affinis), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.lessca.01
9. Antor RJ (1994): Arthropod Fallout on High Alpine Snow Patches of the Central Pyrenees, Northeastern Spain. Arctic and Alpine Research, Vol. 26, No. 1 (Feb., 1994), pp. 72-76
10. AviKom der NWO (2018): Präriemöwe Rhein bei Bonn 27.-28.7.2018. abgerufen am 23.11.2020 von http://nwo-avi.com
11. Aymí, R. and G. Gargallo (2021). Lesser Whitethroat (Curruca curruca), version 1.1. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.leswhi4.01.1
12. Aymí, R. and G. Gargallo (2021). Rüppell's Warbler (Curruca ruppeli), version 1.1. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.ruewar1.01.1
13. Aymí, R., G. Gargallo, and D. A. Christie (2020). Eurasian Blackcap (Sylvia atricapilla), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.blackc1.01
14. Aymí, R., G. Gargallo, and E. de Juana (2021). Barred Warbler (Curruca nisoria), version 1.1. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.barwar1.01.1
15. Aymí, R., G. Gargallo, D. A. Christie, and E. F. J. Garcia (2021). Eastern Subalpine Warbler (Curruca cantillans), version 1.0. In Birds of the World (Editor not available). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.easwar1.01
16. Badyaev, A. V., D. D. Gibson, B. Kessel, P. Pyle, and M. A. Patten (2020). White Wagtail (Motacilla alba), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.whiwag.01
17. Baptista, L.F. et al. (2019). Eurasian Collared-dove (Streptopelia decaocto). In: del Hoyo, J.et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
18. Barbeiro, K. 2014. "Aegypius monachus" (On-line), Animal Diversity Web. 
19. Barthel, P. H., Barthel, C., Bezzel, E., Eckhoff, P., van den Elzen, R., Hinkelmann, C., et al. (2022). Die Vögel der Erde - Arten, Unterarten, Verbreitung und deutsche Namen; 3. ergänzte Auflage. Radolfzell: Deutsche Ornithologen-Gesellschaft.
20. Bauer HG, Bezzel E, Fiedler W (2005): Das Kompendium der Vögel Mitteleuropas; Aula-Verlag, Wiesbaden
21. Bauer HG, Woog F (2008):Nichtheimische Vogelarten (Neozoen) in Deutschland, Teil I: Auftreten, Bestände und Status; Vogelwarte 46, S 157 – 194
22. Beale CM et al. (2006): Climate change may account for the decline in British Ring Ouzels Turdus torquatus. The Journal of animal ecology. 75. 826-35. 
23. Belda, Eduardo & Sánchez, A. (2001). Seabird mortality on longline fisheries in the Western Mediterranean: Factors affecting bycatch and proposed mitigating measures. Biological Conservation. 98. 357-363. 10.1016/S0006-3207(00)00178-6. 
24. Berlusconi, Alessandro & Martinoli, Alessio & Wauters, Lucas & Tesoro, Giulia & Martini, Stefania & Clerici, Erminio & Guenzani, Gualtiero & Pozzi, Gabriele & Rubolini, Diego & Morganti, Michelangelo & Martinoli, Adriano. (2022). Year-round multi-scale habitat selection by Crested Tit (Lophophanes cristatus) in lowland mixed forests (Northern Italy). Avian Research. 13. 100058. 10.1016/j.avrs.2022.100058. 
25. Berstad J, Stokke BG, Moksnes A (2019): Brood parasitism on Meadow Pipits Anthus pratensis by Common Cuckoos Cuculus canorus in two mountain areas in Norway.Ornis Norvegica (2019), 42: 7–14, https://doi.org/10.15845/on.v42i0.2708
26. Bertau P (2014): Die Bedeutung historischer Vogelnamen – Nichtsingvögel. Springer-Spektrum, Berlin
27. Bertau P (2014): Die Bedeutung historischer Vogelnamen – Singvögel. Springer-Spektrum, Berlin
28. Bezzel, E., Geiersberger, I., von Lossow, G., & Pfeifer, R. (Hrsg.). (2005). Brutvögel in Bayern. Verbreitung 1996 bis 1999 (S. 340-341). Verlag Eugen Ulmer.
29. BirdLife International (2023) Species factsheet: Puffinus mauretanicus. Downloaded from http://datazone.birdlife.org/species/factsheet/balearic-shearwater-puffinus-mauretanicus on 26/08/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 26/08/2023.
30. BirdLife International 2019. Anas crecca (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2019: e.T22729717A155455470. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22729717A155455470.en
31. BirdLife International. 2019. Microcarbo pygmaeus (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2019: e.T22696734A155598552. 
32. Bommer, Klaus-Wolfgang 2015): Nachweise ungarischer Silberreiher Casmerodius albus im nördlichen Oberschwaben 2013–2015. Ornithol. Jh. Bad.-Württ. 31: 43–53
33. Bønløkke J, Madsen JJ, Thorup K , Pedersen KT, Bjerrum M, Rahbek C (2006): The Danish Bird Migration Atlas / Dansk Traekfugleatlas. Journal of Ornithology. 147. 205-206.  
34. Brambilla, M., Cortesi, M., Capelli, F. et al. Foraging habitat selection by Alpine White-winged Snowfinches Montifringilla nivalis during the nestling rearing period. J Ornithol 158, 277–286 (2017). https://doi.org/10.1007/s10336-016-1392-9
35. Brinkhuizen, Dušan & Brinkhuizen, Lazar & Keaveney, Andrew & Jane, Sarah. (2010). Red-throated Pipit Anthus cervinus: A new species for South America. Cotinga. 32. 15-17. 
36. Buchheim A (2010) Der Seidensänger von Lünen. Avifaunistische Kommission der Nordrhein-Westfälischen Ornithologengesellschaft e.V.  Abgerufen am 24. März 2023, von https://nwo-avi.com/blog/?page_id=899#:~:text=Aus%20Nordrhein-Westfalen%20liegen%20bisher,und%20beringt%20(Heinen%20et%20al.
37. Bull, E. L. and J. R. Duncan (2020). Great Gray Owl (Strix nebulosa), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.grgowl.01
38. Burger J (2020). Gulls, Terns, Skimmers (Laridae). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
39. Burger, J., Gochfeld, M. & Bonan, A. (2019). Gulls, Terns, Skimmers (Laridae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 17 November 2019).
40. Burger, J., Gochfeld, M. & Garcia, E.F.J. (2019). Ring-billed Gull (Larus delawarensis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
41. Burger, J., Gochfeld, M., Kirwan, G.M., Christie, D.A. & Garcia, E.F.J. (2020). Great Black-backed Gull (Larus marinus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
42. Burger, J., M. Gochfeld, and E. F. J. Garcia (2020). Slender-billed Gull (Chroicocephalus genei), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.slbgul1.01
43. Burger, J., M. Gochfeld, G. M. Kirwan, and E. F. J. Garcia (2020). Caspian Gull (Larus cachinnans), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
44. Burger, J., M. Gochfeld, G. M. Kirwan, D. A. Christie, and E. de Juana (2020). Lesser Black-backed Gull (Larus fuscus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
45. Callaghan, C. T., D. M. Brooks, and P. Pyle (2020). Egyptian Goose (Alopochen aegyptiaca), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.egygoo.01
46. Camiña, Alvaro. (2011). Gänsegeier in Mitteleuropa. Der Falke. 58. 46-49.
47. Canestrari D, Bolopo D, Turlings TCJ, Röder G, Marcos JM, Baglione V (2014): From Parasitism to Mutualism: Unexpected Interactions Between a Cuckoo and Its Host. Science, Vol. 343, Issue 6177, pp. 1350-1352
48. Carboneras C, Kirwan GM (2019). Green-winged Teal (Anas crecca). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
49. Carboneras C, Kirwan GM (2020). Northern Shoveler (Spatula clypeata). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
50. Carboneras, C. & Kirwan, G.M. (2019). Ferruginous Duck (Aythya nyroca). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 4 July 2019).
51. Carboneras, C. & Kirwan, G.M. (2019). Lesser Scaup (Aythya affinis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52913 on 5 July 2019).
52. Carboneras, C. & Kirwan, G.M. (2019). Mallard (Anas platyrhynchos). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52875 on 30 June 2019).
53. Carboneras, C. & Kirwan, G.M. (2019). Ring-necked Duck (Aythya collaris). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 4 July 2019).
54. Carboneras, C. & Kirwan, G.M. (2019). Tufted Duck (Aythya fuligula). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 5 July 2019).
55. Carboneras, C. & Kirwan, G.M. (2020). Mute Swan (Cygnus olor). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52803 on 2 February 2020).
56. Carboneras, C. & Kirwan, G.M. (2020). Ruddy Duck (Oxyura jamaicensis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52934 on 8 February 2020).
57. Carboneras, C. (2019). Ducks, Geese, Swans (Anatidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52210 on 31 March 2019).
58. Carboneras, C. and G. M. Kirwan (2020). Bar-headed Goose (Anser indicus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.bahgoo.01
59. Carboneras, C. and G. M. Kirwan (2020). Black Swan (Cygnus atratus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.blkswa.01
60. Carboneras, C. and G. M. Kirwan (2020). Common Shelduck (Tadorna tadorna), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.comshe.01
61. Carboneras, C. and G. M. Kirwan (2020). Garganey (Spatula querquedula), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.gargan.01
62. Carboneras, C. and G. M. Kirwan (2020). Lesser White-fronted Goose (Anser erythropus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.lwfgoo.01
63. Carboneras, C. and G. M. Kirwan (2020). Pink-footed Goose (Anser brachyrhynchus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pifgoo.01
64. Carboneras, C. and G. M. Kirwan (2020). Tundra Bean-Goose (Anser serrirostris), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.tunbeg1.01
65. Carboneras, C. and G. M. Kirwan (2020). Whooper Swan (Cygnus cygnus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.whoswa.01
66. Carboneras, C., Christie, D.A., Jutglar, F., Garcia, E.F.J. & Kirwan, G.M. (2020). Northern Gannet (Morus bassanus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 4 February 2020).
67. Carboneras, C., D. A. Christie, and G. M. Kirwan (2020). Auckland Islands Teal (Anas aucklandica), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.auitea1.01
68. Carboneras, C., F. Jutglar, and G. M. Kirwan (2021). European Storm-Petrel (Hydrobates pelagicus), version 1.1. In Birds of the World (Editor not available). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.bripet.01.1
69. Carboneras, C., Kirwan, G.M. & Motis, A. (2019). Gadwall (Mareca strepera). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 30 June 2019).
70. Carboneras, C., Kirwan, G.M. & Motis, A. (2020). Gadwall (Mareca strepera). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52866 on 9 February 2020).
71. Carroll, J. P., P. J. K. McGowan, and G. M. Kirwan (2020). Gray Partridge (Perdix perdix), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.grypar.01
72. Carter, M.. (1997). Red-throated pipit Anthus cervinus in Australia. Australian Field Ornithology. 17. 3-10. 
73. Casazza, M. L., Coates, P. S., Miller, M. R., Overton, C. T., & Yparraguirre, D. R. (2012). Hunting influences the diel patterns in habitat selection by northern pintails Anas acuta. Wildlife Biology, 18(1), 1-13.
74. CDNA (2018): Sporenkievit, Vanellus spinosus, Spur-winged Lapwing. Commissie Dwaalgasten nederlande Avifaund. Abgerufen am 23.09.2023 von https://www.dutchavifauna.nl/record/67820
75. Chantler, P., E. de Juana, G. M. Kirwan, and P. F. D. Boesman (2020). Alpine Swift (Apus melba), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.alpswi1.01
76. Christensen, G. C. (2020). Chukar (Alectoris chukar), version 1.0. In Birds of the World (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.chukar.01
77. Ciaranca, M. A., C. C. Allin, and G. S. Jones (2020). Mute Swan (Cygnus olor), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.mutswa.01
78. Ciaranca, M. A., C. C. Allin, and G. S. Jones (2020). Mute Swan (Cygnus olor), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.mutswa.01
79. Cichon M, Sendecka J, Gustafsson L (2003). Age-related decline in humoral immune function in Collared Flycatchers. Journal of evolutionary biology. 16. 1205-10. 
80. Clark, R. G., J. P. Fleskes, K. L. Guyn, D. A. Haukos, J. E. Austin, and M. R. Miller (2020). Northern Pintail (Anas acuta), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.norpin.01
81. Clement, P. (2020). Cetti's Warbler (Cettia cetti), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.cetwar1.01
82. Clement, P. (2020). Island Canary (Serinus canaria), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.comcan.01
83. Clement, P. (2020). Twite (Linaria flavirostris), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.twite1.01
84. Clement, P. (2020). Wood Warbler (Phylloscopus sibilatrix), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.woowar.01
85. Clement, P. and D. A. Christie (2020). Eurasian Bullfinch (Pyrrhula pyrrhula), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eurbul.01
86. Clement, P., J. del Hoyo, N. Collar, and G. M. Kirwan (2020). European Goldfinch (Carduelis carduelis), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eurgol.01
87. Clement, P., J. del Hoyo, N. Collar, G. M. Kirwan, and D. A. Christie (2020). Common Chiffchaff (Phylloscopus collybita), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.comchi1.01
88. Clutton-Brock, J. (1987). Domesticated Animals from Early Times. London: British Museum Press.
89. Cody, M. (2020). Mockingbirds and Thrashers (Mimidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 7 February 2020).
90. Collar N, Christie DA (2020). Northern Wheatear (Oenanthe oenanthe). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
91. Collar N, de Juana E Sharpe CJ (2020). Redwing (Turdus iliacus), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
92. Collar, N. & Christie, D.A. (2019). Common Redstart (Phoenicurus phoenicurus). In: del Hoyo, J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
93. Collar, N. (2019). American Robin (Turdus migratorius). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
94. Collar, N. (2019). Black-eared Wheatear (Oenanthe hispanica). del Hoyo Jet al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
95. Collar, N. (2019). Song Thrush (Turdus philomelos). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58252 on 25 February 2019).
96. Collar, N. (2020). Blue Rock-Thrush (Monticola solitarius), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.burthr.01
97. Collar, N. (2020). Blue Rock-Thrush (Monticola solitarius), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
98. Collar, N. (2020). Desert Wheatear (Oenanthe deserti), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
99. Collar, N. (2020). European Robin (Erithacus rubecula), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
100. Collar, N. (2020). Fieldfare (Turdus pilaris), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.fieldf.01
101. Collar, N. (2020). Fieldfare (Turdus pilaris), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
102. Collar, N. (2020). Isabelline Wheatear (Oenanthe isabellina), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
103. Collar, N. (2020). Pied Wheatear (Oenanthe pleschanka), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
104. Collar, N. (2020). Song Thrush (Turdus philomelos), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.sonthr1.01
105. Collar, N. (2020). Song Thrush (Turdus philomelos), version 1.0. In Birds of the World (J. del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
106. Collar, N. (2020). Thrush Nightingale (Luscinia luscinia), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.thrnig1.01
107. Collar, N. and D. A. Christie (2020). Eurasian Blackbird (Turdus merula), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eurbla.01
108. Collar, N. and D. A. Christie (2020). Ring Ouzel (Turdus torquatus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rinouz1.01
109. Collar, N. and D. A. Christie (2020). Ring Ouzel (Turdus torquatus), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
110. Collar, N., Christie, D.A., de Juana, E. & Kirwan, G.M. (2019). Veery (Catharus fuscescens). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58372 on 6 August 2019).
111. Collar, N., E. de Juana, and C. J. Sharpe (2020). Redwing (Turdus iliacus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.redwin.01
112. Copete, J.L. (2020). Rock Bunting (Emberiza cia), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rocbun1.01
113. Copete, J.L. (2020). Yellowhammer (Emberiza citrinella), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
114. Cornell Lab of Ornithology. (n.d.). American Wigeon. Retrieved February 1, 2023, from https://www.allaboutbirds.org/guide/American_Wigeon/lifehistory
115. Craig A, Feare C. (2019). Common Starling (Sturnus vulgaris). In: del Hoyo J et al. E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
116. Craig, A., Feare, C. & Bonan, A. (2020). Starlings (Sturnidae). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
117. Cullen, S. A., J. R. Jehl Jr., and G. L. Nuechterlein (2020). Eared Grebe (Podiceps nigricollis), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eargre.01
118. Dachverband Deutscher Avifaunisten (2022): Bestandsentwicklung, Verbreitung und jahreszeitliches Auftreten von Brut- und Rastvögeln in Deutschland. Dachverband Deutscher Avifaunisten, www.dda-web.de/voegel/voegel-in-deutschland/, aufgerufen am 13.08.2023.
119. Dachverband Deutscher Avifaunisten (DDA) e.V: www.ornitho.de; 
120. DAK (2013): Seltene Vogelarten in Deutschland 2011 und 2012. DDA, Münster, 2-33
121. DAK (2017): Seltene Vogelarten in Deutschland 2015. DDA, Münster, 2-33
122. DAK (2018): Seltene Vogelarten in Deutschland 2016. DDA, Münster, 2-33
123. DAK 2012b: Seltene Vogelarten in Deutschland 2010. Seltene Vögel in Deutschland 2010: 10–49.
124. DAK 2013: Seltene Vogelarten in Deutschland 2011 und 2012. Seltene Vögel in Deutschland 2011/12: 2–47.
125. DAK 2014: Seltene Vogelarten in Deutschland 2013. Seltene Vögel in Deutschland 2013: 2-39.
126. DAK 2014: Seltene Vogelarten in Deutschland 2013. Seltene Vögel in Deutschland 2013: 2-39.
127. DAK 2017: Seltene Vogelarten in Deutschland 2015. Seltene Vögel in Deutschland 2015: 2-33.
128. DAK 2018: Seltene Vogelarten in Deutschland 2016. Seltene Vögel in Deutschland 2016: 2-33.
129. DAK 2019: Seltene Vogelarten in Deutschland 2017. Seltene Vögel in Deutschland 2017: 2-34.
130. DAK 2020: Seltene Vogelarten in Deutschland 2018. Seltene Vögel in Deutschland 2018: 2-41.
131. DAK 2021: Seltene Vogelarten in Deutschland 2018. Seltene Vögel in Deutschland 2018: 2-34.
132. DAK 2022: Seltene Vogelarten in Deutschland 2018. Seltene Vögel in Deutschland 2018: 2-36.
133. de Magalhaes, Joao Pedro & Costa, JJ. (2009). A database of vertebrate longevity record and their relation to other life-history traits. Journal of evolutionary biology. 22. 1770-4. 10.1111/j.1420-9101.2009.01783.x.
134. del Hoyo, J., N. Collar, G. M. Kirwan, and D. A. Christie (2021). Eastern Orphean Warbler (Curruca crassirostris), version 1.1. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eaowar2.01.1
135. del Hoyo, J., N. Collar, G. M. Kirwan, C.J. Sharpe, and E. F. J. Garcia (2020). Yellow-legged Gull (Larus michahellis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
136. del Hoyo, J., P. F. D. Boesman, and E. F. J. Garcia (2020). American Flamingo (Phoenicopterus ruber), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.grefla2.01
137. Dellwisch, Behrend & Bastian, Anita & Bastian, Hans-Valentin & Schidelko, Kathrin & Stiels, Darius & Engler, Jan. (2022). Bienenfresser Merops apiaster in Deutschland – woher sie kamen, wohin sie gehen. Vogelwarte. 59. 197 - 206. 
138. Dierschke J et al (2020): Ornithologischer Jahresbericht 2019 für Helgoland. Ornithol. Jbr Helgoland 30 (2020). S 1 - 97. OAG - Helgoland. Bremen
139. Dierschke J et al (2021): Ornithologischer Jahresbericht 2019 für Helgoland. Ornithol. Jbr Helgoland 30 (2020). S 1 - 97. OAG - Helgoland. Bremen
140. Dierschke J, Dierschke V, Schmaljohann H, Stühmer F (2019) Ornithologischer Jahresbericht 2018 für Helgoland. Ornithol Jber Helgoland 29: 1–100
141. Dmitry Shitikov, Irina Knyazeva & Alexander Grabovsky (2018) Breeding phenology, reproductive traits and apparent survival of sympatric Marsh Warbler Acrocephalus palustris and Blyth’s Reed Warbler Acrocephalus dumetorum, Bird Study, 65:2, 241-248, DOI: 10.1080/00063657.2018.1448366
142. Dougall TW (1991) Winter distribution and associated movements of northern pied wagtails Motacilla alba yarrellii, as shown by ringing, Ringing & Migration, 12:1, 1-15, DOI: 10.1080/03078698.1991.9673978 http://dx.doi.org/10.1080/03078698.1991.9673978
143. Drilling, N., R. D. Titman, and F. McKinney (2020). Mallard (Anas platyrhynchos), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.mallar3.01
144. DSK (1989): Seltene Vogelarten in der Bundesrepublik Deutschland von 1977 bis 1986. Limicola 3: 157-196
145. DSK (1990): Seltene Vogelarten in der Bundesrepublik Deutschland von 1987 bis 1988. Limicola 4: 183-212
146. DSK (1991): Seltene Vogelarten in der Bundesrepublik Deutschland von 1977 bis 1986. Limicola 3: 157-196
147. DSK (1995): Seltene Vogelarten in Deutschland 1993. Limicola 9: 77-110
148. DSK (1996): Seltene Vogelarten in Deutschland 1994. Limicola 10: 209-257
149. DSK (1997): Seltene Vogelarten in Deutschland 1995. Limicola 11: 153-207
150. DSK (1998): Seltene Vogelarten in Deutschland 1996. Limicola 12: 161-227
151. DSK (2000): Seltene Vogelarten in Deutschland 1997. Limicola 14: 273-340
152. DSK (2005): Seltene Vogelarten in Deutschland 1998. Limicola 16: 113-184
153. DSK (2005): Seltene Vogelarten in Deutschland 1999. Limicola 19: 1-63
154. DSK (2006): Seltene Vogelarten in Deutschland 2000. Limicola 20: 281-353
155. DSK (2008): Seltene Vogelarten in Deutschland von 2001 bis 2005. Limicola 22: 249-339
156. DSK (2009): Seltene Vogelarten in Deutschland von 2006 bis 2008. Limicola 23: 257-334
157. DSK (2010): Seltene Vogelarten in Deutschland 2009 (mit Nachträgen 2001-2008). Limicola 24: 233–286.
158. Dubowy, P. J., C. Carboneras, and G. M. Kirwan (2020). Northern Shoveler (Spatula clypeata), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.norsho.01
159. Dunning, Jamie & Finch, Tom & Davison, Angus & Durrant, Kate. (2019). Population‐specific migratory strategies of Twite Linaria flavirostris in Western Europe. Ibis. 162. 10.1111/ibi.12791.
160. Dyrcz A et al. (2020): Eurasian Reed Warbler (Acrocephalus scirpaceus), version 1.0. In Birds of the World (Billerman SM, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
161. Dyrcz, A. (2020). Great Reed Warbler (Acrocephalus arundinaceus), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
162. Edenius, Lars & Choi, Chang-Yong & Heim, Wieland & Jaakkonen, Tuomo & de Jong, Adriaan & Ozaki, Kiyoaki & Roberge, Jean-Michel. (2016). The next common and widespread bunting to go? Global population decline in the Rustic Bunting Emberiza rustica. Bird Conservation International. -1. 1-10. 10.1017/S0959270916000046.
163. Elliott, A. & Bonan, A. (2019). Pelicans (Pelecanidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52198 on 6 October 2019).
164. Elliott, A., D. A. Christie, E. F. J. Garcia, and P. F. D. Boesman (2020). Black Stork (Ciconia nigra), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.blasto1.01
165. Elliott, A., D. A. Christie, F. Jutglar, E. F. J. Garcia, and G. M. Kirwan (2020). Great White Pelican (Pelecanus onocrotalus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.grwpel1.01
166. Ely, C. R., A. X. Dzubin, C. Carboneras, G. M. Kirwan, and E. F. J. Garcia (2020). Greater White-fronted Goose (Anser albifrons), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.gwfgoo.01
167. Engler J et al. (2016). Die Arealexpansion des Orpheusspötters Hippolais polyglotta: ein Modell für Biogeographie und Populationsgenetik. Ornithologische Beobachter. 113. 121-132. 
168. Engler, Jan & Boehm, Niklas & Twietmeyer, Sönke & Elle, Ortwin. (2016). The range expansion of the Melodious Warbler Hippolais polyglotta: a model system for biogeography and population genetics - Die Arealexpansion des Orpheusspötters Hippolais polyglotta: ein Modell für Biogeographie und Populationsgenetik. Ornithologische Beobachter. 113. 121-132.
169. Ferlini Flavio (2020). Wintering range of western yellow wagtail Motacilla flava in Africa and Europe in a historical perspective. Rivista italiana di Ornitologia - Research in Ornithology. 90. 3-39. 10.4081/rio.2020.430.
170. Ferlini, F (2015): Evoluzione dell’areale riproduttivo della Cutrettola “italiana” Motacilla flava cinereocapilla. Rivista Italiana di Ornitologia 85 (2): 3-18, 2015  
171. Flower (1938): Further notes on the duration of life in animals. IV. Birds. Proc Zool Soc London, Ser. A:195-235
172. Fransson T, et al. (2017) EURING list of longevity records for European birds. Abgerufen 12.08.2020 von https://euring.org/
173. Gerlach B et al. (2019): Vögel in Deutschland – Übersichten zur Bestandssituation. DDA, BfN, LAG VSW, Münster.
174. Gerlach, B., R. Dröschmeister, T. Langgemach, K. Borkenhagen, M. Busch, M. Hauswirth, T. Heinicke, J. Kamp, J. Karthäuser, C. König, N. Markones, N. Prior, S. Trautmann, J. Wahl & C. Sudfeldt (2019): Vögel in Deutschland – Übersichten zur Bestandssituation. DDA, BfN, LAG VSW, Münster
175. Giudice, J. H., J. T. Ratti, and S. G. Mlodinow (2022). Ring-necked Pheasant (Phasianus colchicus), version 1.1. In Birds of the World (N. D. Sly, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rinphe1.01.1
176. Glutz von Blotzheim UN, Bauer KM (1988): Handbuch der Vögel Mitteleuropas - Band 11/1; Passeriformes (2. Teil): Turdidae, Aula, Eiesbaden
177. Glutz von Blotzheim UN, Bauer KM (1992): Handbuch der Vögel Mitteleuropas - Bd.3/Teil 2, Aula, Eiesbaden
178. Glutz von Blotzheim, U (1988) Handbuch der Vögel Mitteleuropas. Band 13/1. Bearb. von Urs N. Glutz von Blotzheim; Kurt M. Bauer. – Wiesbaden: Aula-Verl.
179. Glutz von Blotzheim, U. N., Bauer, K. M., & Bezzel, E. (2011). Handbuch der Vögel Mitteleuropas. Aula-Verlag.
180. Glutz von Blotzheim, U. N., Bauer, K. M., & Bezzel, E. (2011). Handbuch der Vögel Mitteleuropas. Aula-Verlag.
181. Gochfeld, M., Burger, J. & Garcia, E.F.J. (2019). Arctic Tern (Sterna paradisaea). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions,
182. Gosler, A. and P. Clement (2020). Crested Tit (Lophophanes cristatus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.cretit2.01
183. Gosler, A. and P. Clement (2020). Crested Tit (Lophophanes cristatus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.cretit2.01
184. Guzy, M. J., B. J. McCaffery, and N. Collar (2020). Bluethroat (Luscinia svecica), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.blueth.01
185. Halupka L, Dyrcz A, Borowiec M (2008): Climate change affects breeding of Reed Warblers Acrocephalus scirpaceus. Journal of Avian Biology. 39. 95 - 100.
186. Harrap S, Bonan A (2020). Treecreepers (Certhiidae). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 7 February 2020).
187. Harrap, S. (2020). Long-tailed Tit (Aegithalos caudatus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.lottit1.01
188. Hart J, Milsom T, Fisher G, Kindemba V, Moreby S, Murray A, Robertson P (2006): The relationship between yellowhammer breeding performance, arthropod abundance and insecticide applications on arable farmland. Journal of Applied Ecology. 43. 81 - 91. 10.1111/j.1365-2664.2005.01103.x. Lewis, T. L., D. H. Ward, J. S. Sedinger, A. Reed, D. V. Derksen, C. Carboneras, D. A. Christie, and G. M. Kirwan (2020). Brant (Branta bernicla), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.brant.01
189. Hasselquist D (1998): Polygyny in Great Reed Warblers: a long-term study of factors contributing to male fitness. Ecology. 79 (7): 2376–2390
190. Hatch, J. J., M. Gochfeld, J. Burger, and E. F. J. Garcia (2020). Arctic Tern (Sterna paradisaea), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.arcter.01
191. Hatchwell, B. (2020). Dunnock (Prunella modularis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.dunnoc1.01
192. Hatchwell, B. and D. A. Christie (2020). Alpine Accentor (Prunella collaris), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.alpacc1.01
193. Heckscher, C. M., L. R. Bevier, A. F. Poole, W. Moskoff, P. Pyle, and M. A. Patten (2020). Veery (Catharus fuscescens), version 1.0. In Birds of the World (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.veery.01
194. Henle, Klaus & Alard, Didier & Clitherow, Jeremy & Cobb, Paul & Firbank, Les & Kull, Tiiu & McCracken, Davy & Moritz, Robin & Niemelä, Jari & Rebane, Michael & Wascher, Dirk & Watt, Allan & Young, Juliette. (2008). Identifying and Managing the Conflicts between Agriculture and Biodiversity Conservation in Europe—a Review. Agriculture, Ecosystems & Environment. 124. 60-71. 10.1016/j.agee.2007.09.005.
195. Hepp, G. R. and F. C. Bellrose (2020). Wood Duck (Aix sponsa), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.wooduc.01
196. Herrmann, Christof & Nehls, Hans. (2015). Küstenseeschwalbe Sterna paradisaea. Beiträge zur Avifauna Mecklenburg-Vorpommerns. 2. 
197. Heydemann B, Meyer H (1983): Auswirkungen der lntensivkultur auf die Fauna in den Agrarbiotopen. Landespflege und Landwirtschaft. Heft 42, S. 174-191. Dezember 1983. Bonn
198. Hiebl, I., Braunitzer, G. Anpassungen der Hämoglobine von Streifengans (Anser indicus), Andengans (Chloephaga melanoptera) und Sperbergeier (Gyps rueppellii) an hypoxische Bedingungen. J Ornithol 129, 217–226 (1988). https://doi.org/10.1007/BF01647290
199. Holt, D. W., R. Berkley, C. Deppe, P. L. Enríquez, J. L. Petersen, J. L. Rangel Salazar, K. P. Segars, K. L. Wood, G. M. Kirwan, D. A. Christie, and J. S. Marks (2020). Little Owl (Athene noctua), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.litowl1.01
200. Holt, D. W., R. Berkley, C. Deppe, P. L. Enríquez, J. L. Petersen, J. L. Rangel Salazar, K. P. Segars, K. L. Wood, G. M. Kirwan, D. A. Christie, and J. S. Marks (2020). Little Owl (Athene noctua), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.litowl1.01
201. Hume, R. and G. M. Kirwan (2020). Eurasian Thick-knee (Burhinus oedicnemus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eutkne1.01
202. Hussell, D. J. T. and R. Montgomerie (2020). Lapland Longspur (Calcarius lapponicus), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.laplon.01
203. Isenmann, P., & Fradet, G. (1995). Is the nesting association between the Orphean Warbler (Sylvia hortensis) and the Woodchat Shrike (Lanius senator) an anti-predator oriented mutualism?. Journal für Ornithologie, 136, 288-291.
204. Jahn A (2004): Warnsignale aus der Wüste. Spektrum. Spektrum.de, abgerufen am 30.1.2020
205. Jobling, JA (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm
206. Jobling, JA (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm
207. Johnson, K. (1995). Green-winged Teal (Anas crecca), version 2.0. In The Birds of North America (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.193
208. Johnson, K., C. Carboneras, D. A. Christie, and G. M. Kirwan (2020). Green-winged Teal (Anas crecca), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.gnwtea.01
209. Johnson, O. W., P. G. Connors, and P. Pyle (2021). Pacific Golden-Plover (Pluvialis fulva), version 1.1. In Birds of the World (P. G. Rodewald, B. K. Keeney, and S. M. Billerman, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pagplo.01.1
210. Kannan, R. and D. A. James (1998). Indian Peafowl (Pavo cristatus), version 2.0. In The Birds of North America (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. (abgerufen am 24.02.2020)
211. Karte: San Jose, 1 April 2007, adapted by Chumwa, 6 May 2008 [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
212. Kartenvorlage: Karte: NordNordWest, Lizenz: Creative Commons by-sa-3.0 de
213. Kirwan, G. M., J. del Hoyo, N. Collar, and T. S. David (2021). Balearic Shearwater (Puffinus mauretanicus), version 1.1. In Birds of the World (B. K. Keeney, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.balshe1.01.1
214. Kren J, Zoerb AC (2020). Northern Wheatear (Oenanthe oenanthe), version 1.0. In Birds of the World (Billerman SM et al Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. 
215. Kreusel, A (2018) Erster Brutnachweis der Brillengrasmücke Sylvia conspicillata in Deutschland im Nationalpark Eifel. Charadrius 54, Heft 2-3, 2018: 129-131; http://www.nw-ornithologen.de/images/textfiles/charadrius/charadrius54_129_131_Kreusel_Monatsvogel_ErstbrutnachweisBrillengrasmueckeDeutschland.pdf
216. Kreusel, A., M. A . Neumann & A. Torkler 2019: Erster Brutnachweis der Brillengrasmücke Sylvia conspicillata für Deutschland. Seltene Vögel in Deutschland 2017: 36-43.
217. Kroodsma, D. & Brewer, D. (2019). Wrens (Troglodytidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 19 July 2019).
218. Krüger T, Zang H (2017):  Nachträge zum Speziellen Teil der Avifauna „Die Vögel Niedersachsens und des Landes Bremen. Naturschutz und Landschaftspflege in Niedersachsen Sonderreihe B, Heft 1.2, S. 154-223 
219. Krüger, Thorsten. (2004). Das Vorkommen des Gelbbrauen-Laubsängers Phylloscopus inornatus in Deutschland [The occurrence of Yellow-browed Warbler in Germany]. 125. 41-52.
220. Langenberg J, Langenberg T (2009): Gefiedervariationen bei Aschkopf-Schafstelzen Motacilla cinereocapilla. Otus 1: 11-17.
221. Lavers JJ, Hipfner M, Chapdelaine G (2020). Razorbill (Alca torda), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA.
222. Leif, A. P. (1994). Survival and Reproduction of Wild and Pen-Reared Ring-Necked Pheasant Hens. The Journal of Wildlife Management, 58(3), 501–506. https://doi.org/10.2307/3809322
223. Leschack, C. R., S. K. McKnight, and G. R. Hepp (2020). Gadwall (Mareca strepera), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.gadwal.01
224. Liesen, Jörg. "Der Grauspecht Picus canus im Kottenforst bei Bonn–historische und aktuelle Verbreitung sowie Diskussion möglicher Rückgangsursachen." Charadrius 48 (2012): 12-22.
225. Llimona F et al. (2020). Grebes (Podicipedidae). In: del Hoyo, J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
226. Maclean, G.L. & Bonan, A. (2019). Coursers, Pratincoles (Glareolidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.  
227. Macwhirter, R. B., P. Austin-Smith Jr., and D. E. Kroodsma (2020). Sanderling (Calidris alba), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.sander.01
228. Madge S, Burn H (1988). Waterfowl: An Identification Guide to the Ducks, Geese, and Swans of the World. Boston: Houghton Mifflin.
229. Madge, S. (2020). Red-billed Chough (Pyrrhocorax pyrrhocorax), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rebcho1.01
230. Madge, S. (2020). Rook (Corvus frugilegus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rook1.01
231. Madge, S. (2020). Yellow-billed Chough (Pyrrhocorax graculus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.yebcho1.01
232. Martens, J. and Kessler, P. (2000), Territorial song and song neighbourhoods in the Scarlet Rosefinch Carpodacus erythrinus. Journal of Avian Biology, 31: 399-411. https://doi.org/10.1034/j.1600-048X.2000.310316.x
233. Martens, Jochen & Meincke, Corinna. (1989). Der sibirische Zilpzalp ( Phylloscopus collybita tristis ): Gesang und Reaktion einer mitteleuropäischen Population im Freilandversuch. Journal of Ornithology - J ORNITHOL. 130. 455-473. 10.1007/BF01918465.
234. Marti, C. D., A. F. Poole, L. R. Bevier, M.D. Bruce, D. A. Christie, G. M. Kirwan, and J. S. Marks (2020). Barn Owl (Tyto alba), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.brnowl.01
235. Martinez N et al. (2020): Vorkommen von Wasseramsel Cinclus cinclus und Gebirgsstelze Motacilla cinerea in Abhängigkeit vom biologischen Zustand der Fliess­ge­wäs­ser. Orni­tho­logischer Beobachter 117 (2): 164-176  
236. Martínez-Vilalta, A., A. Motis, and G. M. Kirwan (2020). Gray Heron (Ardea cinerea), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.graher1.01
237. Martínez-Vilalta, A., A. Motis, and G. M. Kirwan (2020). Great Bittern (Botaurus stellaris), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.grebit1.01
238. Marzluff, J. (2019). Common Raven (Corvus corax). In: del Hoyo,J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
239. Matheu, E., del Hoyo, J., Kirwan, G.M., Garcia, E.F.J. & Boesman, P. (2020). Glossy Ibis (Plegadis falcinellus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52775 on 29 January 2020).
240. Matheu, E., J. del Hoyo, D. A. Christie, G. M. Kirwan, and E. F. J. Garcia (2020). African Sacred Ibis (Threskiornis aethiopicus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.sacibi2.01
241. Matheu. E., del Hoyo, J., Christie, D.A., Garcia, E.F.J., Kirwan, G.M. & Boesman, P. (2020). Eurasian Spoonbill (Platalea leucorodia). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52779 on 29 January 2020).
242. McCaffery, B. J. and R. E. Gill (2020). Bar-tailed Godwit (Limosa lapponica), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. 
243. McGowan, P. J. K., G. M. Kirwan, and P. F. D. Boesman (2020). Red-legged Partridge (Alectoris rufa), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.relpar1.01
244. McGowan, P.J.K. & Kirwan, G.M. (2020). Common Pheasant (Phasianus colchicus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 4 February 2020).
245. McGowan, P.J.K. & Kirwan, G.M. (2020). Grey Partridge (Perdix perdix). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 4 February 2020).
246. McGowan, P.J.K., Kirwan, G.M. & Boesman, P. (2019). Indian Peafowl (Pavo cristatus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (abgerufen am 24.02.2020)
247. McRoberts, J. T., M. C. Wallace, and S. W. Eaton (2020). Wild Turkey (Meleagris gallopavo), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.wiltur.01
248. Mebs T, Scherzinger W (2008): Die Eulen Europas. Biologie, Kennzeichen, Bestände. Kosmos, Stuttgart
249. Mebs T, Schmidt D (2012): Greifvögel Europas – Biologie – Bestandsverhältnisse – Bestandsgefährdung. Franckh-Kosmos Verlag, Stuttgart
250. Meyburg, B.U., D. A. Christie, G. M. Kirwan, and J. S. Marks (2020). Cinereous Vulture (Aegypius monachus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
251. Meyburg, B.-U., P. F. D. Boesman, J. S. Marks, and G. M. Kirwan (2020). Lesser Spotted Eagle (Clanga pomarina), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.leseag1.01
252. Montevecchi, W. A. and D. A. Kirk (2020). Great Auk (Pinguinus impennis), version 1.0. In Birds of the World (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.greauk.01
253. Mooij J, Paulsch A, Scholze W (2008): Re-introduction of Lesser White-fronted Goose Anser erythropus in Fennoscandia with the help of microlight aircraft. - Vogelwelt 129: 301–303.. Vogelwelt. 129. 301-303.
254. Mooij JH (2015): Die Zwerggans Anser erythropus, eine bedrohte Art in den Mühlen der Politik. Vogelwarte 55: 207-222
255. NABU:Kein Schutz für Kormoran und Graureiher, April 2015, abgerufen am 31. Juli 2017
256. naturgucker.de (2021): Krickente - Phänologie. naturgucker.de gemeinnützige eG. Abgerufen am 05.01.2021
257. naturgucker.de (2021): Rotkopfwürger - Phänologie. naturgucker.de gemeinnützige eG. Abgerufen am 05.02.2021
258. Neil Durham (1981) Rock Pipits Feeding On Fish, Bird Study, 28:3, 186, DOI: 10.1080/00063658109476722
259. Nettleship, D. N. (2020). Ruddy Turnstone (Arenaria interpres), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rudtur.01
260. Nettleship, D.N., Boesman, P. & Garcia, E.F.J. (2019). Black Guillemot (Cepphus grylle). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
261. Oken L (1837): Allgemeine Naturgeschichte für alle Stände. Bd. 7, Vögel. Hoffmann’ sche Verlagsbuchhandlung, Stuttgart
262. Olsen, P.D. & Marks, J.S. (2020). Northern Long-eared Owl (Asio otus). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
263. Ormerod, S., S. Tyler, and D. A. Christie (2020). White-throated Dipper (Cinclus cinclus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.whtdip1.01
264. Ornitho (2021): Verbreitung de´r Krickente im Jahresverlauf. Online-Datenbank des DDA. Abgerufen am 05.01.2021
265. Ornitho (2021): Verbreitung de´r Krickente im Jahresverlauf. Online-Datenbank des DDA. Abgerufen am 05.01.2021
266. Ornitho (2021): Verbreitung des Rotkopfwürgers im Jahresverlauf. Online-Datenbank des DDA. Abgerufen am 05.02.2021
267. Orta, J., D. A. Christie, F. Jutglar, E. F. J. Garcia, and G. M. Kirwan (2020). Pygmy Cormorant (Microcarbo pygmaeus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
268. Orta, J., G. M. Kirwan, and J. S. Marks (2020). Eurasian Hobby (Falco subbuteo), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eurhob.01
269. Orta, J., G. M. Kirwan, P. F. D. Boesman, E. F. J. Garcia, and J. S. Marks (2020). Eurasian Griffon (Gyps fulvus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
270. Orta, J., P. F. D. Boesman, J. S. Marks, E. F. J. Garcia, and G. M. Kirwan (2020). Eurasian Marsh-Harrier (Circus aeruginosus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.wemhar1.01
271. Parr N & Bearhop, Stuart & D.C, Douglas & Takekawa, John & Prosser, Diann & Newman, Scott & W.M, Perry & Sivananinthaperumal, Balachandran & Witt, Matthew & Y, Hou & Z, Luo & Hawkes, Lucy. (2017). High altitude flights by ruddy shelduck ( Tadorna ferruginea ) during Trans-Himalayan migrations. Journal of Avian Biology. 48. 10.1111/jav.01443.
272. Parr N et al. (2017): High altitude flights by ruddy shelduck ( Tadorna ferruginea ) during Trans-Himalayan migrations. Journal of Avian Biology. Vol 48. Is 10. P 1310-1315
273. Paruk, J. D., D. C. Evers, J. W. McIntyre, J. F. Barr, J. Mager, and W. H. Piper (2021). Common Loon (Gavia immer), version 2.0. In Birds of the World (P. G. Rodewald and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.comloo.02
274. Payne, L. X. and E. P. Pierce (2020). Purple Sandpiper (Calidris maritima), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA.
275. Payne, R. B. (2020). Zebra Finch (Taeniopygia guttata), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.zebfin2.01
276. Peach, Will & Lovett, Lucy & Wotton, Simon & Jeffs, Cath. (2001). Countryside Stewardship delivers Cirl Buntings (Emberiza cirlus) in Devon, UK. Biological Conservation. 101. 361-373. 10.1016/S0006-3207(01)00083-0.
277. Peris S et al.  (2005): Range expansion of the European starling Sturnus vulgaris in Argentina. Ardeola: International Journal of Ornithology 52(2):359-364
278. Pierce RJ, Kirwan GM (2019): Pied Avocet (Recurvirostra avosetta). In: del Hoyo, J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
279. Polak, Marcin. (2014). Protective nesting association between the Barred Warbler Sylvia nisoria and the Red-backed Shrike Lanius collurio: an experiment using artificial and natural nests. Ecological Research. 10.1007/s11284-014-1183-9. 
280. Pollet, I. L., D. Shutler, J. W. Chardine, and J. P. Ryder (2020). Ring-billed Gull (Larus delawarensis), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.ribgul.01
281. Poole A. F., P. Pyle, M. A. Patten, and D. R. Paulson (2020). Black-bellied Plover (Pluvialis squatarola), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. 
282. Ranner A, Laber J, Berg HM: Nachweise seltener und bemerkenswerter Vogelarten in Österreich 1980-1990. Egretta 38, 59-98
283. Ranner A, Laber J, Berg HM: Nachweise seltener und bemerkenswerter Vogelarten in Österreich 1980-1990. Egretta 38, 59-98  
284. Ranner A, Laber J, Berg HM: Nachweise seltener und bemerkenswerter Vogelarten in Österreich 1980-1990. Egretta 38, 59-98  
285. Rehsteiner U (2013): Brutgeschäft des Wüstensteinschmätzers Oenanthe deserti in der Dsungarischen Gobi, Mongolei. Der Ornithologische Beobachter.110/1: 47-54
286. Rising, J. (2019). White-throated Sparrow (Zonotrichia albicollis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
287. Rizzolo, D. J., C. E. Gray, J. A. Schmutz, J. F. Barr, C. Eberl, and J. W. McIntyre (2020). Red-throated Loon (Gavia stellata), version 2.0. In Birds of the World (P. G. Rodewald and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.retloo.02
288. Robert A. Robinson, Stephen N. Freeman, Dawn E. Balmer & Mark J. Grantham (2007) Cetti's Warbler Cettia cetti: analysis of an expanding population, Bird Study, 54:2, 230-235, DOI: 10.1080/00063650709461479
289. Roeske, T. C., Rothenberg, D., & Gammon, D. E. (2021). Mockingbird Morphing Music: A Taxonomy of Transitions in a Complex Bird Song. Frontiers in Psychology, 12, 1143. doi:10.3389/fpsyg.2021.630115
290. Röhmhild M, Mayer J, Sacher T (2004): Anmerkungen zum Auftreten des Pazifischen Goldregenpfeifer Pluvialsi [dominca] fulva in Europa. Avifaunistik in Bayern; BD 1; Heft 1; S. 61-68
291. Romagosa, C. M. (2020). Eurasian Collared-Dove (Streptopelia decaocto), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eucdov.01
292. Rosenberger, Joanna & Kowalczyk, Artur & Lukaszewicz, Ewa & Strzała, Tomasz. (2020). Female-Male and Female-Female Social Interactions of Captive Kept Capercaillie (Tetrao Urogallus) and Its Consequences in Planning Breeding Programs. Animals. 10. 583. 10.3390/ani10040583.
293. Roy, C. L., C. M. Herwig, W. L. Hohman, and R. T. Eberhardt (2012). Ring-necked Duck (Aythya collaris), version 2.0. In The Birds of North America (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.329
294. Roy, C. L., C. M. Herwig, W. L. Hohman, and R. T. Eberhardt (2020). Ring-necked Duck (Aythya collaris), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rinduc.01
295. Ruokonen, M & Aarvak, Tomas & Madsen, Jesper. (2005). Colonization history of the high-arctic pink-footed goose Anser brachyrhynchus. Molecular ecology. 14. 171-8. 10.1111/j.1365-294X.2004.02380.x.
296. Ryslavy T, Bauer HG, Gerlach B, Hüppop O, Stahmer J, Südbeck P, Sudfeldt C: Rote Liste der Brutvögel Deutschlands, 6. Fassung. In: Deutscher Rat für Vogelschutz (Hrsg.): Berichte zum Vogelschutz. Band 57, 30. September 2020.
297. Salvador A, Amat JA (2021): Ruddy Shelduck (Tadorna ferruginea), version 2.0. In Birds of the World (Billerman SM et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
298. Salvador, A. and J. A. Amat (2021). Ruddy Shelduck (Tadorna ferruginea), version 2.0. In Birds of the World (S. M. Billerman and M. A. Bridwell, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rudshe.02
299. Schulze-Hagen, K. Parasitierung und Brutverluste durch den Kuckuck (Cuculus canorus) bei Teich- und Sumpfrohrsänger (Acrocephalus scirpaceus,A. palustris) in Mittel- und Westeuropa. J Ornithol 133, 237–249 (1992). https://doi.org/10.1007/BF01645635
300. Schuphan I (2011): Die Zippammer (Emberiza cia) – eine Vogelart, die große Klimaunterschiede ertragen kann. Vogelwarte 49, 2011: 129–136
301. Schweizer et al. (2019): Genome-wide evidence supports mitochondrial relationships and pervasive parallel phenotypic evolution in open-habitat chats. Mol. Phylogenet. Evol. 139: 35-45
302. Schweizer, Manuel. (2013). Das Auftreten der verschiedenen Unterarten der Schafstelze Motacilla flava in der Schweiz und ihre Handhabung durch die Schweizerische Avifaunistische Kommission (SAK). Der Ornithologische Beobachter. 110. 33-40. 
303. Schweizerische Vogelwarte Sempach (2020): Vögel der Schweiz - Blaumerle. Abgerufen am 16.11.220 von https://www.vogelwarte.ch/de/voegel/voegel-der-schweiz/blaumerle
304. Schweizerische Vogelwarte Sempach (2020): Vögel der Schweiz - Blaumerle. Abgerufen am 16.11.220 von https://www.vogelwarte.ch/de/voegel/voegel-der-schweiz/blaumerle
305. Seite „Bartkauz“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 29. Juni 2019, 14:09 UTC. URL: (Abgerufen: 22. September 2019, 11:35 UTC)
306. Seite „Braune Nachtbaumnatter“. In: Wikipedia – Die freie Enzyklopädie. Bearbeitungsstand: 19. Januar 2022, 12:27 UTC. URL: https://de.wikipedia.org/w/index.php?title=Braune_Nachtbaumnatter&oldid=219334409 (Abgerufen: 24. September 2023, 11:10 UTC)
307. Seite „Bucephala“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 4. Januar 2019, 12:58 UTC. URL: https://de.wikipedia.org/w/index.php?title=Bucephala&oldid=184377685 (Abgerufen: 5. Juli 2019, 13:38 UTC)
308. Seite „Eiderenten“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 4. Januar 2019, 13:16 UTC. URL: https://de.wikipedia.org/w/index.php?title=Eiderenten&oldid=184378182 (Abgerufen: 5. Juli 2019, 13:39 UTC)
309. Seite „Hühnervögel“. In: Wikipedia – Die freie Enzyklopädie. Bearbeitungsstand: 31. Mai 2023, 03:23 UTC. URL: https://de.wikipedia.org/w/index.php?title=H%C3%BChnerv%C3%B6gel&oldid=234177865 (Abgerufen: 27. Juli 2023, 12:38 UTC)
310. Seite „Langleinenfischerei“. In: Wikipedia – Die freie Enzyklopädie. Bearbeitungsstand: 5. Juni 2022, 08:22 UTC. URL: https://de.wikipedia.org/w/index.php?title=Langleinenfischerei&oldid=223443762 (Abgerufen: 26. August 2023, 10:13 UTC)
311. Seite „Lappentaucher“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 24. Dezember 2018, 16:13 UTC. (Abgerufen: 29. März 2019, 09:50 UTC)
312. Seite „Marmelente“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 20. Oktober 2019, 19:15 UTC. URL: https://de.wikipedia.org/w/index.php?title=Marmelente&oldid=193304241 (Abgerufen: 11. Februar 2020, 09:25 UTC)
313. Seite „Meerenten und Säger“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 6. Januar 2019, 16:01 UTC. URL: https://de.wikipedia.org/w/index.php?title=Meerenten_und_S%C3%A4ger&oldid=184458830 (Abgerufen: 5. Juli 2019, 13:38 UTC)
314. Seite „Moorente“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 19. April 2019, 21:42 UTC. URL: https://de.wikipedia.org/w/index.php?title=Moorente&oldid=187720053 (Abgerufen: 4. Juli 2019, 08:41 UTC)
315. Seite „Riesenalk“. In: Wikipedia – Die freie Enzyklopädie. Bearbeitungsstand: 7. August 2023, 17:58 UTC. URL: https://de.wikipedia.org/w/index.php?title=Riesenalk&oldid=236208790 (Abgerufen: 2. September 2023, 11:04 UTC)
316. Seite „Röhrennasen“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 12. Februar 2018, 19:28 UTC. URL:  (Abgerufen: 10. Juli 2019, 10:38 UTC)
317. Seite „Ruderenten“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 6. Januar 2019, 15:52 UTC. (Abgerufen: 22. Juni 2019, 09:02 UTC)
318. Seite „Säger“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 1. Mai 2019, 19:06 UTC. URL: https://de.wikipedia.org/w/index.php?title=S%C3%A4ger&oldid=188118454 (Abgerufen: 5. Juli 2019, 13:40 UTC)
319. Seite „Schwäne“. In: Wikipedia – Die freie Enzyklopädie. Bearbeitungsstand: 5. April 2023, 10:01 UTC. URL: https://de.wikipedia.org/w/index.php?title=Schw%C3%A4ne&oldid=232503119 (Abgerufen: 16. September 2023, 11:16 UTC)
320. Seite „Schwimmenten“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 24. Juni 2019, 05:25 UTC. URL: https://de.wikipedia.org/w/index.php?title=Schwimmenten&oldid=189816702 (Abgerufen: 3. Juli 2019, 07:54 UTC)
321. Seite „Singdrossel“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 29. Juli 2019, 10:21 UTC. URL, Abgerufen: 31. Juli 2019, 09:07 UTC
322. Seite „Steinrötel“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 27. Juli 2019, 11:48 UTC. URL: https://de.wikipedia.org/w/index.php?title=Steinr%C3%B6tel&oldid=190796318 (Abgerufen: 10. August 2019, 18:02 UTC)
323. Seite „Tauchenten“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 6. Januar 2019, 15:50 UTC. URL: https://de.wikipedia.org/w/index.php?title=Tauchenten&oldid=184458373 (Abgerufen: 3. Juli 2019, 07:52 UTC)
324. Seite „Triele“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 9. Februar 2019, 16:21 UTC. URL: https://de.wikipedia.org/w/index.php?title=Triele&oldid=185529178 (Abgerufen: 13. Juli 2019, 13:52 UTC)
325. Seite „Tristan-Inselralle“. In: Wikipedia – Die freie Enzyklopädie. Bearbeitungsstand: 9. November 2022, 18:56 UTC. URL: https://de.wikipedia.org/w/index.php?title=Tristan-Inselralle&oldid=227826794 (Abgerufen: 7. August 2023, 14:09 UTC)
326. Seite „Wacholderdrossel“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 15. Juli 2019, 18:17 UTC. URL: https://de.wikipedia.org/w/index.php?title=Wacholderdrossel&oldid=190461231 (Abgerufen: 2. August 2019, 07:13 UTC)
327. Seite „Wanderdrossel“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 21. Dezember 2018, 18:13 UTC. URL: (Abgerufen: 6. August 2019, 07:41 UTC)
328. Seite „Wiesenschmätzer“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 21. Dezember 2018, 18:22 UTC. URL: https://de.wikipedia.org/w/index.php?title=Wiesenschm%C3%A4tzer&oldid=183916497 (Abgerufen: 10. August 2019, 18:05 UTC)
329. Shitikov D et al.  (2018) Breeding phenology, reproductive traits and apparent survival of sympatric Acrocephalus palustris and A dumetorum, Bird Study, 65:2, 241-248
330. Sjöberg S et al. (2021): Extreme altitudes during diurnal flights in a nocturnal songbird migrant. Science, 07 Mai 2021 : 646-648  
331. Smith RJ et al. (2020). Gray Catbird (Dumetella carolinensis), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. 
332. Stark M (2009): Shock and caw: Pesky Starlings still overwhelm. Associated Press, erschienen auf: NBCNews.com, abgerufen am 16. Oktober 2020  
333. STEINER, ERICH. "Ökologie und Verhalten des Graureihers an Fischgewässern." Vogelschutz in Österreich 6 (1991): 64-74.
334. Stiftung Preußische Schlösser und Gärten Berlin-Brandenburg (2015): Nachwuchs auf der Pfaueninsel. Pressemitteilung, abgerufen am 16.09.2023  
335. Stübing S, Korn M, Kreuziger J, Werner M (2010): Vögel in Hessen. Die Brutvögel Hessens in Raum und Zeit. Brutvogelatlas Reuffurt, Mühlheim am Rhein
336. Sudfeldt, C., R. Dröschmeister, W. Frederking, K. Gedeon, B. Gerlach, C. Grüneberg, J. Karthäuser, T. Langgemach, B. Schuster, S. Trautmann & J. Wahl (2013): Vögel in Deutschland – 2013. DDA, BfN, LAG VSW, Münster.
337. Summers-Smith, D. and A. Bonan (2020). White-winged Snowfinch (Montifringilla nivalis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.whwsno1.01
338. Svensson L, Christie DA (2020). Melodious Warbler (Hippolais polyglotta), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
339. Svensson, L. (2013). A taxonomic revision of the Subalpine Warbler Sylvia cantillans. Bulletin of the British Ornithologists’ Club, 113, 240-248.
340. Svensson, L. (2020). Icterine Warbler (Hippolais icterina), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.ictwar1.01
341. Svensson, L. and D. A. Christie (2020). Melodious Warbler (Hippolais polyglotta), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.melwar1.01
342. Taylor, B. (2019). Old World Flycatchers and Chats (Muscicapidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52322 on 10 August 2019).
343. Taylor, B. (2020). Collared Flycatcher (Ficedula albicollis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.colfly1.01
344. Taylor, B. (2020). Little Crake (Zapornia parva), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.litcra1.01
345. Taylor, B., D. A. Christie, and C. J. Sharpe (2020). Semicollared Flycatcher (Ficedula semitorquata), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.semfly1.01
346. Taylor, B., G. M. Kirwan, and D. A. Christie (2020). Red-breasted Flycatcher (Ficedula parva), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
347. Telfair II, R. C. (2020). Cattle Egret (Bubulcus ibis), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.categr.01
348. Todte, Ingolf, Kaatz Michael und Fiedler, Wolfgang 2010): Woher stammen in Deutschland auftretende Silberreiher Casmerodius albus? Erste Hinweise aus der Satellitentelemetrie eines Vogels und aus neuen Ringfunden. Vogelwarte 48: 269–273
349. Tote Basstölpel und Trottellummen auf Helgoland durch Plastikmüll. Die Zeit abgerufen am 29.11.2019
350. Tracy, D. M., D. Schamel, and J. Dale (2020). Red Phalarope (Phalaropus fulicarius), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.redpha1.01
351. Turner, A. (2019). Collared Sand Martin (Riparia riparia). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
352. Tyler S, Christie DA (2020): Western Yellow Wagtail (Motacilla flava), version 1.0. In Birds of the World (del Hoyo J et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
353. Tyler, S. (2020). Red-throated Pipit (Anthus cervinus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
354. Tyler, S. and C. J. Sharpe (2020). Meadow Pipit (Anthus pratensis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.meapip1.01
355. Tyler, S. and D. A. Christie (2020). Western Yellow Wagtail (Motacilla flava), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eaywag1.01
356. Van Gils J et al. (2019). Bar-tailed Godwit (Limosa lapponica). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
357. Van Gils J et al. (2020). Pectoral Sandpiper (Calidris melanotos). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 
358. Van Gils J, Wiersma P, Boesman P. (2019). Dunlin (Calidris alpina). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
359. Van Gils, J., P. Wiersma, and G. M. Kirwan (2020). Common Greenshank (Tringa nebularia), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.comgre.01
360. Van Gils, J., P. Wiersma, and G. M. Kirwan (2020). Common Redshank (Tringa totanus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
361. Van Gils, J., P. Wiersma, and G. M. Kirwan (2020). Common Sandpiper (Actitis hypoleucos), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
362. Van Gils, J., P. Wiersma, and G. M. Kirwan (2020). Marsh Sandpiper (Tringa stagnatilis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.marsan.01
363. Van Gils, J., P. Wiersma, and G. M. Kirwan (2020). Ruff (Calidris pugnax), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.ruff.01
364. Van Gils, J., P. Wiersma, and G. M. Kirwan (2020). Wood Sandpiper (Tringa glareola), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.woosan.01
365. Van Gils, J., P. Wiersma, and P. F. D. Boesman (2020). Little Stint (Calidris minuta), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
366. Van Gils, J., P. Wiersma, D. A. Christie, E. F. J. Garcia, and P. F. D. Boesman (2020). Black-tailed Godwit (Limosa limosa), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
367. Van Gils, J., P. Wiersma, G. M. Kirwan, and C. J. Sharpe (2020). Eurasian Curlew (Numenius arquata), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eurcur.01
368. Van Gils, J., P. Wiersma, G. M. Kirwan, and C. J. Sharpe (2020). Great Snipe (Gallinago media), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.gresni1.01
369. Van Gils, J., P. Wiersma, G. M. Kirwan, and C.J. Sharpe (2020). Curlew Sandpiper (Calidris ferruginea), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
370. Van Gils, J., Wiersma, P. & Boesman, P. (2019). Sanderling (Calidris alba). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53923 on 14 July 2019).
371. Van Gils, J., Wiersma, P. & Kirwan, G.M. (2020). Purple Sandpiper (Calidris maritima). In: del Hoyo J et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona
372. Van Gils, J., Wiersma, P. & Kirwan, G.M. (2020). Red Phalarope (Phalaropus fulicarius). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53946 on 10 April 2020).
373. Van Gils, J., Wiersma, P. & Kirwan, G.M. (2020). Ruddy Turnstone (Arenaria interpres). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53918 on 10 April 2020).
374. Van Nieuwenhuyse, Dries; Genot, Jean-Claude; Johnson, David H. (2008). The Little Owl: Conservation, Ecology and Behavior of Athene noctua. Cambridge University Press. pp. Chapter 2.
375. Vanderhoff N et al. (2020). American Robin (Turdus migratorius), version 1.0. In Birds of the World (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. 
376. Vanderhoff, N., P. Pyle, M. A. Patten, R. Sallabanks, and F. C. James (2020). American Robin (Turdus migratorius), version 1.0. In Birds of the World (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.amerob.01
377. Viitala, J, Korpimäki, E, Palokangas, P, Koivula, M. (1995) Attraction of kestrels to vole scent marks visible in ultraviolet light Nature 373,425-427
378. Voelker, G., Light, J.E. Palaeoclimatic events, dispersal and migratory losses along the Afro-European axis as drivers of biogeographic distribution in Sylvia warblers. BMC Evol Biol 11, 163 (2011). https://doi.org/10.1186/1471-2148-11-163
379. Warnock, N. D. and R. E. Gill (2020). Dunlin (Calidris alpina), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA.
380. Wegst, C (2015): Einflug des Buschrohrsängers Acrocephalus dumetorum in Deutschland im Frühjahr 2014. Seltene Vögel in Deutschland 2014: 51–57.
381. Weimerskirch, H., Collet, J., Corbeau, A., Pajot, A., Hoarau, F., Marteau, C., ... & Patrick, S. C. (2020). Ocean sentinel albatrosses locate illegal vessels and provide the first estimate of the extent of nondeclared fishing. Proceedings of the National Academy of Sciences, 117(6), 3006-3014.
382. Weimerskirch, H., Filippi, D. P., Collet, J., Waugh, S. M., & Patrick, S. C. (2018). Use of radar detectors to track attendance of albatrosses at fishing vessels. Conservation Biology, 32(1), 240-245.
383. Weiß I (2014): Seltene Vogelarten in Baden-Württemberg 2012. 10. Bericht der AKBW. Ornithol. Jh. Bad.-Württ. 30, Heft 1, 63-78
384. White, C. M., N. J. Clum, T. J. Cade, and W. G. Hunt (2020). Peregrine Falcon (Falco peregrinus), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.perfal.01
385. Wiersma, P. and G. M. Kirwan (2020). Eurasian Dotterel (Charadrius morinellus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eurdot.01
386. Wiersma, P. and G. M. Kirwan (2020). Spur-winged Lapwing (Vanellus spinosus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
387. Wiersma, P., G. M. Kirwan, and P. F. D. Boesman (2020). European Golden-Plover (Pluvialis apricaria), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
388. Wiersma, P., Kirwan, G.M. & Boesman, P. (2019). Grey Plover (Pluvialis squatarola). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved on 8 February 2019).
389. Wiggins, D. A., D. W. Holt, and S. M. Leasure (2020). Short-eared Owl (Asio flammeus), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.sheowl.01
390. Wikipedia contributors. "Podiceps." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 18 Jan. 2020. Web. 6 Mar. 2020.
391. Wikipedia contributors. "Tachybaptus." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 18 Jan. 2020. Web. 6 Mar. 2020.
392. Wikipedia contributors. (2019, April 2). Ficedula. In Wikipedia, The Free Encyclopedia. Retrieved 18:03, August 10, 2019, from https://en.wikipedia.org/w/index.php?title=Ficedula&oldid=890640403
393. Wikipedia contributors. (2019, Juni 20). American robin. In Wikipedia, The Free Encyclopedia. Retrieved 07:40, August 6, 2019, from
394. Wikipedia contributors. (2019, November 21). Stiff-tailed duck. In Wikipedia, The Free Encyclopedia. Retrieved 20:06, Februar 8, 2020, from https://en.wikipedia.org/w/index.php?title=Stiff-tailed_duck&oldid=927346743
395. Wikipedia contributors. (2019, November 22). Aythya. In Wikipedia, The Free Encyclopedia. Retrieved 10:04, February 11, 2020, from https://en.wikipedia.org/w/index.php?title=Aythya&oldid=927402313
396. Wikipedia contributors. (2019, November 22). Netta. In Wikipedia, The Free Encyclopedia. Retrieved 09:39, February 11, 2020, from https://en.wikipedia.org/w/index.php?title=Netta&oldid=927402267
397. Wikipedia contributors. (2020): Cinereous vulture. In Wikipedia, The Free Encyclopedia. Retrieved 08:22, Juli 7, 2020, from https://en.wikipedia.org/w/index.php?title=Cinereous_vulture&oldid=964903649
398. Wikipedia contributors. (2021, April 30). Black swan emblems and popular culture. In Wikipedia, The Free Encyclopedia. Retrieved 08:06, August 8, 2021, from https://en.wikipedia.org/w/index.php?title=Black_swan_emblems_and_popular_culture&oldid=1020621965
399. Wikipedia contributors. (2023, Februar 24). Little owl. In Wikipedia, The Free Encyclopedia. Retrieved 06:36, September 1, 2023, from https://en.wikipedia.org/w/index.php?title=Little_owl&oldid=1141248180
400. Wikipedia contributors. Green-winged teal. Wikipedia, The Free Encyclopedia. Oktober 29, 2018, 12:42 UTC. Available at: https://en.wikipedia.org/w/index.php?title=Green-winged_teal&oldid=866285187. Accessed Juni 30, 2019.
401. Winkler DW et al.  (2020). Albatrosses (Diomedeidae), version 1.0. In Birds of the World Billerman SM et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
402. Winkler DW et al. (2020). Mockingbirds and Thrashers (Mimidae), version 1.0. In Birds of the World (Billerman SM et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
403. Winkler DW et al. (2020). Treecreepers (Certhiidae), version 1.0. In Birds of the World (Billerman SM et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
404. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Bee-eaters (Meropidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.meropi1.01
405. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Bustards (Otididae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.otidid1.01
406. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Cuckoos (Cuculidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.cuculi1.01
407. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Falcons and Caracaras (Falconidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.falcon1.01
408. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Guans, Chachalacas, and Curassows (Cracidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.cracid2.01
409. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Gulls, Terns, and Skimmers (Laridae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.larida1.01
410. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Gulls, Terns, and Skimmers (Laridae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.larida1.01
411. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Kinglets (Regulidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.reguli1.01
412. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Long-tailed Tits (Aegithalidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.aegith2.01
413. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Loons (Gaviidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.gaviid1.01
414. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Northern Storm-Petrels (Hydrobatidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.hydrob1.01
415. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Old World Flycatchers (Muscicapidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.muscic3.01
416. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Pelicans (Pelecanidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.peleca1.01
417. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Plovers and Lapwings (Charadriidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.charad1.01
418. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Rails, Gallinules, and Coots (Rallidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rallid1.01
419. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Reed Warblers and Allies (Acrocephalidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.acroce2.01
420. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Sandpipers and Allies (Scolopacidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.scolop2.01
421. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Shearwaters and Petrels (Procellariidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.procel3.01
422. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Sylviid Warblers, Parrotbills, and Allies (Sylviidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.sylvii1.01
423. Winkler, D. W., S. M. Billerman, and I. J. Lovette (2020). Waxbills and Allies (Estrildidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.estril1.01
424. Winkler, D. W., S. M. Billerman, and I.J. Lovette (2020). Barn-Owls (Tytonidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.tytoni1.01
425. Winkler, D. W., S. M. Billerman, and I.J. Lovette (2020). Ducks, Geese, and Waterfowl (Anatidae), version 1.0. In Birds of the World (Billerman SM et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
426. Winkler, D. W., S. M. Billerman, and I.J. Lovette (2020). Grebes (Podicipedidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
427. Winkler, D. W., S. M. Billerman, and I.J. Lovette (2020). Hawks, Eagles, and Kites (Accipitridae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.
428. Winkler, D. W., S. M. Billerman, and I.J. Lovette (2020). Pratincoles and Coursers (Glareolidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
429. Winkler, D. W., S. M. Billerman, and I.J. Lovette (2020). Wrens (Troglodytidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.troglo1.01
430. Winkler, DW et al. (2020). Starlings (Sturnidae), version 1.0. In Birds of the World (Billerman SM et al. Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. 
431. Winkler, H. and D. A. Christie (2020). Eurasian Green Woodpecker (Picus viridis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eugwoo2.01
432. Winkler, H., D. A. Christie, G. M. Kirwan, and E. de Juana (2020). Middle Spotted Woodpecker (Dendrocoptes medius), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.miswoo1.01
433. Zampiga E et al. (2006). Innate and learned aspects of vole urine UV-reflectance use in the hunting behaviour of the Common Kestrel Falco tinnunculus. Journal of Avian Biology. 37(4): 318–322.
434. Zuccon D, et al. (2008): Phylogenetic relationships among Palearctic–Oriental starlings and mynas (genera Sturnus and Acridotheres: Sturnidae). Zoologica Scripta. 37 (5): 469–481