Appearance:

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.

Sound:

Various mewing sounds. Similar in form to Herring Gull, but much higher pitched.

Call:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC

Appearance:

Largely unmistakable. All black, with white frontal shield and pale bill. Very stocky build. Lacks the white lateral stripe and white under tail-coverts of Moorhen. White trailing edge of wings visible in flight. Juveniles paler and more grey than adults, often with whitish front and neck. Under tail-coverts are dark, unlike juvenile Moorhen.

Sound:

Varied. Usually short, metallic and explosive. Most diagnostic call a very short, sharp and explosive "tsk". Sometimes a longer, less sharp but nasal "caw", with varying harshness.

Various calls:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC