Larus canus
Differs from Herring Gull in smaller size, lighter bill and light flight. Head profile rounded, and the small bill lacks the red spot of the larger gulls. Told apart from Kittwake by greenish legs and large white spot on wing tips. Juveniles quite similar to young Ring-billed Gulls, but latter have paler grey back, heavier, pinkish bill with dark tip, pale mid-wing panel and less contrasting terminal band of tail.
Various mewing sounds. Similar in form to Herring Gull, but much higher pitched.
Wikipedia: map (se also Xeno-canto below)
Birdlife ecology
