Appearance:

Easily confused with Whooper Swan, but yellow on bill restricted to a rounded patch. May sometimes extend towards the bill-tip, but never beyond nostrils. Angle of mouth bold black. Gives a more compact impression than Whooper, due to shorter neck. Head shape noticeably more rounded, and seemingly larger. Juveniles paler grey than Whooper, with the same bill pattern as in adults, but in faint, pale yellow and pink. Flight easy and goose-like.

Sound:

More vocal than other swans. Both higher pitched and deeper sounds. Birds on the water often gives crooning, crane-like notes with less defined pitch. Tone is less full-bodied in these calls. Flight call a deep, yelping, soft barking sound. Each call short, with a "helpless" quality.

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

CC

CC-sound:Peter Boesman, Licence,Link.

Appearance:

Slate grey upperparts with barred white underparts. Female and juvenile sometimes rufous brown. Male with defined grey breast in contrast to barred white belly, female with diffusely barred chest and throat. Yellow iris and thin bill. Wings and tail long and slender, often giving the impression of a small falcon. Often perches with a more horizontal posture than hawks or falcons, i.e. tail pointing backwards and not towards the ground, and drooping wings. In flight wings are not raise above horizontal plane, and it seldom glides like raptors.

Sound:

Song: the well known disyllabic "cuck-coo" with emphasis on first note, and the second note a third lower than the first one. Also a harsh "tchaa tchaa", and a bubbly trill, reminiscent of Little Grebe, uttered by the female.

Male:

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