Appearance:

Unmistakable. Dark green (appears black at a distance) above and white below. Wings also dark above and white below, with diagnostic rounded and broad tips. Squarish head profile with striking crest. Winter and juvenile plumage with scaled back, and less contrasting breast band.

Sound:

Quite vocal, especially in flight at breeding ground. Territorial call: Dry, introductory phrases followed by drawn-out mewing sounds; "wyrrr-peeeoo-weeep". Alarm call "pee-wit".

Flight 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:

Medium sized diving duck. Male with rufous brown head and pale grey body. Female indistinctly coloured in grey and brown, with diffuse head markings. Easiest identified by fairly distinct head profile; long bill continuous with sloping forehead, ending in peaked crown (both sexes). Bulky body and short neck. Both sexes with long, pale grey wing-bars. Juveniles like female, except body warmer brown.

Sound:

Female: a coarse "ahrrrrrrr-ahrrrrr-ahrrrr" with a vibrating quality. Male courting call a pleasant, drawn out, nasal whistle "tweeeeep", rising in pitch, often followed by a falling "puuuh" (e.g a long disyllabic tweeepuuuuuuh). Also a sharper "ki-ki-ki" or "ki-ki-kiko".

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-sound:Jarek Matusiak, Licence,Link.