Appearance:

Big and white waterfowl with orange bill and black knob at base of bill. Juveniles more greyish and differs from juvenile Whoopers by all grey bill and black lores. Neck usually held more S-shaped than other swans when swimming. Long tail prominent when upending.

Sound:

Silent compared to other swans. A repertoire of snorting, grunting and hissing sound when interacting. No far carrying sounds. Wings produce prominent singing sound which may function as a flight contact-call.

Social sounds:

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:Peter Boesman, Licence,Link.

Appearance:

Small head, short, thick neck, quite broad wings and fairly short tail. May be confused with a range of different species due to the highly variable plumage. Underparts range from almost white to very dark. Plumage tone ranges from chocolate to rusty brown. Dark morph usually with pale breast band. Shows 5 fingers like other Buteo, as opposed to small eagles. Tail lacks the broad terminal band of Rough-legged Buzzard. Neck thicker than in Honey Buzzard. Secondary coverts form a pale band in dark morph. Light morph typically with primary coverts forming black 'comma'. Soars with raised wings, but glides on straight wings.

Sound:

Quite vocal. Most typical call a wailing, mewing "peeoooo". Quite similar to Rough-legged Buzzard, but the pitch falls more rapidly and is then sustained for the last part of the call.

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:Piotr Szczypinski, Licence,Link.