Appearance:

Large gull with deep chest, light grey back and heavy yellow bill with red spot (adult). Pinkish legs and black tipped primaries with white windows. Winter plumage with streaked head and neck. Develops grey mantle in 2.nd winter. Young birds may be difficult to distinguish from juvenile Greater- or Lesser Black-backed Gulls, and the species shows notable variation in both plumage and size. Juveniles generally shows darker head and less contrasting markings than Greater Black-back, and pale inner primaries (window), as opposed to the all black hand of young Lesser Black-backs.

Sound:

Quite vocal. A long and strong "ay-kay-kay-kay-kay" with fading strength commonly heard. A deep "ga-ga-ga" heard from anxious birds. All calls much deeper pitched than Common Gull. Difficult to distinguish from Lesser Black-backed Gull, but tone is less nasal.

Contact call and song:

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-sound:Jens Kirkeby, Licence,Link.

Appearance:

Most likely to be confused with Little Crake (P. parva). Most important field characters is the very short primary projection and lack of red base of bill. Some caution should be taken as missing or unorderly tertials can be confusing with regards to the projection, and immature Little Crake may sometimes also lack red base of bill. Flanks and belly more extensively barred than P. parva. Upperparts richer brown with white spots. Sexes alike, but females often with paler throat. Brown cheeks occurs in both sexes. Legs dirty olive colour and bill greenish. Immature even more easily confused with P. parva, but apart from the missing projection, note warmer brown upperparts and more heavily barred underparts, even on breast. Crown less evenly coloured than P. parva, with blackish speckles.

Sound:

Rich repertiore. Male song easily overlooked due to similarity to The edible frog Pelophylax esculentus., and to being audible only a few hundred meters. The sound, a rolling "trrrrrrrr", differs from frogs in being drier and more stable in pitch. Sometimes the pitch rises slightly in the beginning of the call, but then remains stable also at the end. The call is uttered in 1-2 seconds intervals and each call is 2-3 seconds long. Some overtone modulation is common (stable pitch but change of vocal "ooeeii"). Unmated female sings with a more hurried "wirrr". Alarm call a series of nasal, hoarse "weeat" or a sharp "kriik".

Male song:

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

CC

CC-sound:Edmunds Racinskis, Licence,Link.

CC-photo:Peter Jacobs Photos, Licence,Link.

CC-photo:gilgit2, Licence,Link.

CC-photo:Marc Herremans, Licence,Link.

CC-photo:Marc Herremans, Licence,Link.