Black-headed Gull
Images: Estormiz, CC0, Greg Peterson in Japan, Attribution-NonCommercial-ShareAlike License, Greg Peterson in Japan, Attribution-NonCommercial-ShareAlike License, bramblejungle, Attribution-NonCommercial License, squallidon, Attribution-NonCommercial-ShareAlike License, dhobern, Attribution License, contact me, CC BY 3.0, Eugene Archer, Attribution-NonCommercial License, Alpsdake, CC BY-SA 3.0, Roland zh, CC BY-SA 3.0, chaz jackson, Attribution License, Greg Peterson in Japan, Attribution-NonCommercial-ShareAlike License, Estormiz, CC0, Bas Kers (NL), Attribution-NonCommercial-ShareAlike License, Howard21042, Attribution-NonCommercial-ShareAlike License, xor74, Attribution-NonCommercial-ShareAlike License, Brian H. Hoffe, Attribution-NonCommercial-ShareAlike License, Laurent Echiniscus, Attribution-NonCommercial-ShareAlike License, Rectifier99, CC BY-SA 4.0, RachidH, Attribution-NonCommercial License, Tintazul, CC BY-SA 3.0, Greg Peterson in Japan, Attribution-NonCommercial-ShareAlike License, Domenico Chiarenza, Attribution-NonCommercial-ShareAlike License, Alpsdake, CC BY-SA 3.0, Chris_Moody, Attribution-NonCommercial License, holgeric77, Public Domain Dedication (CC0), Politikaner, CC BY-SA 3.0,
.JPG){kind=link}
Audio: Stein Ø. Nilsen, Attribution-Non-Commercial-Share-Alike License, Sunny, Attribution-Non-Commercial-Share-Alike License, idem,