Appearance:

Large diving duck with elongated, triangular head profile and short neck. Male: white upperparts and black belly, black cap and two light green patches at back of head. Females are mostly barred in brown. Differs from King Eider by extended feathering on light tipped bill, triangular head profile with less steep forehead and lack of v-barred flanks. Flying birds gives a more elongated impression than King Eiders.

Sound:

Males call a typical, pleasant, clear, 2-3 second long "aaaooooooh". Starting on a low note, slowly ascending and ending on a descending note. Usually accompanied by the female "ga ga ga ga".

Display-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:Paul Williams www.IronAmmonitePhotography.com, Licence,Link.

Sounds:Recorded by Stein Ø. Nilsen,http://www.xeno-canto.org ,CC license

Appearance:

Breeding adult easily identified by white tail/rump combined with jet black under wing coverts and silvery upper wing. Immature with brownish back contrasting with pale, silvery upper wings and pale rump. Broad white collar, and lacks dark breast patch of immature Black Tern. Adult winter most liable to confusion with other terns, but upperparts much paler than Black Tern. Contrasting dark outer primaries and secondaries to rest of wing. Often retains some black under coverts even in winter which is diagnostic if seen. Slightly more compact than Black Tern and often recalls Little gull in shape. Bill noticeably shorter and thinner than in Whiskered Tern.

Sound:

Mostly silent away from breeding ground. Most diagnostic call a dry, rolling "krrrrrr-ta-ta" where the rolling is followed by one or two accentuated syllables, or just simply "krrrrrr". Used in excitement.

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

CC

CC-sound:Marco Dragonetti, Licence,Link.

CC-photo:Dick Hoek, Licence,Link.

CC-photo:Lars Buckx, Licence,Link.