Quellen und Links
- Burger, J., Gochfeld, M., Kirwan, G.M., Christie, D.A. & de Juana, E. (2019). Lesser Black-backed Gull (Larus fuscus). 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/53986 on 19 February 2019).
- Kartenvorlage: Karte: NordNordWest, Lizenz: Creative Commons by-sa-3.0 de