IDENTIFICATION OF YELLOW-LEGGED GULLS
plate 1
skins from left to right:
Lesser Black-backed Gull Larus fuscus collected in gull colony of Berlenga Island, Peniche,Portugal;
Lesser Black-backed Gull Larus fuscus collected in gull colony of Port of Rotterdam,The Netherlands;
Portuguese Atlantic Gull Larus atlantis berlengaensis collected in gull colony of Berlenga Island, Peniche,Portugal;
Portuguese Atlantic Gull Larus atlantis berlengaensis collected in gull colony of Berlenga Island, Peniche,Portugal;
West Mediterranean Yellow-legged Gull Larus michahellis camarquensis collected in Parque Nationale de la Camarque, France;
West Mediterranean Yellow-legged Gull Larus michahellis camarquensis collected in Parque Nationale de la Camarque, France;
West Mediterranean Yellow-legged Gull Larus michahellis camarquensis collected in Parque Nationale de la Camarque, France;
Dutch Herring Gull Larus argentatus argenteus collected in gull colony of Port of Rotterdam,The Netherlands;
NB please note that I consider all yellow-legged gulls from the Atlantic coast of Iberia i.e. NW Spain,Portugal.Gibraltar as belonging to the atlantis group.
Norman Deans van Swelm
https://radioactiverobins.com/archive/gulls/atlanticgulls/atlanticyellow-leggedgulls1.htm