A great black-backed gull on a fishing boat. Fish Quay, North Shields
The great black-backed gull (Larus marinus), also known as the greater black-backed gull, is the largest member of the gull family. It breeds on the European and North American coasts and islands of the North Atlantic and is fairly sedentary, though some move farther south or inland to large lakes or reservoirs. The adult great black-backed gull has a white head, neck and underparts, dark grey wings and back, pink legs and yellow bill.