Robuta

https://www.audubon.org/art/birds-of-america/black-backed-gull Black Backed Gull | John James Audubon's Birds of America black backed gull john james audubon birds america https://www.fws.gov/media/great-black-backed-gull-flounder Great Black-Backed Gull with Flounder | FWS.gov great black backed gull flounder fws https://pbase.com/bister/image/76564392 Great Black-backed Gull (Larus marinus) photo - Hans Bister photos at pbase.com great black backed gull