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.
Alström P, Mild K (2010): Pipits & Wagtails of Europe and North America. Christophe Helm, London. Bloomsbury Publishing. Kindle-Version.
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
AviKom der NWO (2018): Präriemöwe Rhein bei Bonn 27.-28.7.2018. abgerufen am 23.11.2020 von http://nwo-avi.com
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
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.
Bauer HG, Bezzel E, Fiedler W (2005): Das Kompendium der Vögel Mitteleuropas; Aula-Verlag, Wiesbaden
Bauer HG, Woog F (2008):Nichtheimische Vogelarten (Neozoen) in Deutschland, Teil I: Auftreten, Bestände und Status; Vogelwarte 46, S 157 – 194
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
Bertau P (2014): Die Bedeutung historischer Vogelnamen – Nichtsingvögel. Springer-Spektrum, Berlin
Bertau P (2014): Die Bedeutung historischer Vogelnamen – Singvögel. Springer-Spektrum, Berlin
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
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.
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.
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.
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.
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
Camiña, Alvaro. (2011). Gänsegeier in Mitteleuropa. Der Falke. 58. 46-49.
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
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.
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).
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).
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).
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).
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).
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).
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
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
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
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
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
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
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
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).
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).
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
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
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
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
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
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
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.
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).
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
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
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
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
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).
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
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
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.
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
DAK (2013): Seltene Vogelarten in Deutschland 2011 und 2012. DDA, Münster, 2-33
DAK (2017): Seltene Vogelarten in Deutschland 2015. DDA, Münster, 2-33
DAK (2018): Seltene Vogelarten in Deutschland 2016. DDA, Münster, 2-33
DAK 2012b: Seltene Vogelarten in Deutschland 2010. Seltene Vögel in Deutschland 2010: 10–49.
DAK 2013: Seltene Vogelarten in Deutschland 2011 und 2012. Seltene Vögel in Deutschland 2011/12: 2–47.
DAK 2014: Seltene Vogelarten in Deutschland 2013. Seltene Vögel in Deutschland 2013: 2-39.
DAK 2014: Seltene Vogelarten in Deutschland 2013. Seltene Vögel in Deutschland 2013: 2-39.
DAK 2017: Seltene Vogelarten in Deutschland 2015. Seltene Vögel in Deutschland 2015: 2-33.
DAK 2018: Seltene Vogelarten in Deutschland 2016. Seltene Vögel in Deutschland 2016: 2-33.
DAK 2019: Seltene Vogelarten in Deutschland 2017. Seltene Vögel in Deutschland 2017: 2-34.
DAK 2020: Seltene Vogelarten in Deutschland 2018. Seltene Vögel in Deutschland 2018: 2-41.
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.
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.
Dachverband Deutscher Avifaunisten (DDA) e.V: www.ornitho.de.
Dierschke J et al (2020): Ornithologischer Jahresbericht 2019 für Helgoland. Ornithol. Jbr Helgoland 30 (2020). S 1 - 97. OAG - Helgoland. Bremen
Dierschke J, Dierschke V, Schmaljohann H, Stühmer F (2019) Ornithologischer Jahresbericht 2018 für Helgoland. Ornithol Jber Helgoland 29: 1–100
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
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
DSK (1989): Seltene Vogelarten in der Bundesrepublik Deutschland von 1977 bis 1986. Limicola 3: 157-196
DSK (1990): Seltene Vogelarten in der Bundesrepublik Deutschland von 1987 bis 1988. Limicola 4: 183-212
DSK (1991): Seltene Vogelarten in der Bundesrepublik Deutschland von 1977 bis 1986. Limicola 3: 157-196
DSK (1995): Seltene Vogelarten in Deutschland 1993. Limicola 9: 77-110
DSK (1996): Seltene Vogelarten in Deutschland 1994. Limicola 10: 209-257
DSK (1997): Seltene Vogelarten in Deutschland 1995. Limicola 11: 153-207
DSK (1998): Seltene Vogelarten in Deutschland 1996. Limicola 12: 161-227
DSK (2000): Seltene Vogelarten in Deutschland 1997. Limicola 14: 273-340
DSK (2005): Seltene Vogelarten in Deutschland 1998. Limicola 16: 113-184
DSK (2005): Seltene Vogelarten in Deutschland 1999. Limicola 19: 1-63
DSK (2006): Seltene Vogelarten in Deutschland 2000. Limicola 20: 281-353
DSK (2008): Seltene Vogelarten in Deutschland von 2001 bis 2005. Limicola 22: 249-339
DSK (2009): Seltene Vogelarten in Deutschland von 2006 bis 2008. Limicola 23: 257-334
DSK (2010): Seltene Vogelarten in Deutschland 2009 (mit Nachträgen 2001-2008). Limicola 24: 233–286.
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
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.
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.
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
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
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.
Flower (1938): Further notes on the duration of life in animals. IV. Birds. Proc Zool Soc London, Ser. A:195-235
Fransson T, et al. (2017) EURING list of longevity records for European birds. Abgerufen 12.08.2020 von https://euring.org/
Gerlach B et al. (2019): Vögel in Deutschland – Übersichten zur Bestandssituation. DDA, BfN, LAG VSW, Münster.
Glutz von Blotzheim, U. N., Bauer, K. M., & Bezzel, E. (2011). Handbuch der Vögel Mitteleuropas. Aula-Verlag.
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
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
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.
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
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
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
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
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
Jobling, JA (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm
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
Kartenvorlage: Karte: NordNordWest, Lizenz: Creative Commons by-sa-3.0 de
Krüger, Thorsten. (2004). Das Vorkommen des Gelbbrauen-Laubsängers Phylloscopus inornatus in Deutschland [The occurrence of Yellow-browed Warbler in Germany]. 125. 41-52.
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.
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
Madge S, Burn H (1988). Waterfowl: An Identification Guide to the Ducks, Geese, and Swans of the World. Boston: Houghton Mifflin.
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
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
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
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.
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
Mebs T, Scherzinger W (2008): Die Eulen Europas. Biologie, Kennzeichen, Bestände. Kosmos, Stuttgart
Mebs T, Schmidt D (2012): Greifvögel Europas – Biologie – Bestandsverhältnisse – Bestandsgefährdung. Franckh-Kosmos Verlag, Stuttgart
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.
Mooij JH (2015): Die Zwerggans Anser erythropus, eine bedrohte Art in den Mühlen der Politik. Vogelwarte 55: 207-222
Neil Durham (1981) Rock Pipits Feeding On Fish, Bird Study, 28:3, 186, DOI: 10.1080/00063658109476722
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
Oken L (1837): Allgemeine Naturgeschichte für alle Stände. Bd. 7, Vögel. Hoffmann’ sche Verlagsbuchhandlung, Stuttgart
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.
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
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.
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.
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
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
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.
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.
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.
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
Ranner A, Laber J, Berg HM: Nachweise seltener und bemerkenswerter Vogelarten in Österreich 1980-1990. Egretta 38, 59-98
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.
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
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
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.
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
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
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.
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.
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
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
Schuphan I (2011): Die Zippammer (Emberiza cia) – eine Vogelart, die große Klimaunterschiede ertragen kann. Vogelwarte 49, 2011: 129–136
Seite „Bartkauz“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 29. Juni 2019, 14:09 UTC. URL: (Abgerufen: 22. September 2019, 11:35 UTC)
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)
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)
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)
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)
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)
Seite „Singdrossel“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 29. Juli 2019, 10:21 UTC. URL, Abgerufen: 31. Juli 2019, 09:07 UTC
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)
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)
Seite „Wanderdrossel“. In: Wikipedia, Die freie Enzyklopädie. Bearbeitungsstand: 21. Dezember 2018, 18:13 UTC. URL: (Abgerufen: 6. August 2019, 07:41 UTC)
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)
Stübing S, Korn M, Kreuziger J, Werner M (2010): Vögel in Hessen. Die Brutvögel Hessens in Raum und Zeit. Brutvogelatlas Reuffurt, Mühlheim am Rhein
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.
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
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).
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
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
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.
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.
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
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.
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
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
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.
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.
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.
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
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).
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
Viitala, J, Korpimäki, E, Palokangas, P, Koivula, M. (1995) Attraction of kestrels to vole scent marks visible in ultraviolet light Nature 373,425-427
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.
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
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
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.
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
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
Wikipedia contributors. (2019, Juni 20). American robin. In Wikipedia, The Free Encyclopedia. Retrieved 07:40, August 6, 2019, from
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
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
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
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
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
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.
