Appearance:

Adults: Black back and pinkish legs. Large white windows at tips of primaries, and broad white trailing edge of wing. A very heavy gull with a heavy bill and broad wings. Juveniles with pale head, boldly spotted back and heavier bill than Lesser Black-backed and Herring Gull.

Sound:

Can be identified from the low pitch alone. Clearly deeper than Lesser Black-backed and Herring Gull.

Call:

Distribution:

Xeno-canto: map

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

CC-sound:Jarek Matusiak, Licence,Link.

Appearance:

Adults in summer at close range unmistakable. Bill in juveniles almost black, and much less deep than in adults. Adults in winter plumage also show much darker bill and cheeks than in summer. At a distance head gives an all dark impression, with characteristic dark "shadow " in front of the eye. Head and bill less elongated than in other auks. Wings rounded with dark undersides. "Thighs" dark. Flight fluttering and energic, with shifting weight and angle.

Sound:

Deep, but not so coarse as Razorbill. Smoother and more gliding changes in pitch, like a "slow-motion" laugh or distant chainsaw; "aaaahrrr, aahr, ahr arh".

Contact 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

CC-photo:zanzamos, Licence,Link.

Sounds:Recorded by Hans Petter Kristoffersen,http://www.xeno-canto.org ,CC license