Appearance:

A very large, long and slender bird. Bigger than Grey Heron. Plumage grey, with contrasting black throat and flight-feathers. White sides of neck. Tertials forms fluffed, ostrich-like rear end. Red crown visible at close range. Easily told from herons in flight by the straight neck. Juveniles with rufous head, lacking the marked pattern of adults.

Sound:

Powerful, resonant and bugling "kriiiiioooo" in various forms. Very far reaching. Often heard in duet where the female immediately answers the male call at a slightly deeper pitch. Also very vocal when flocks meet.

Call, male/female:

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.

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.