Appearance:

Small, stocky diving duck with short bill, big triangular head and yellow eyes (dark in juveniles). Male: dark metallic green head and white patch at base of bill. Black back and tail. Neck, breast and underparts white. Female with brown head, white collar and pale underparts. White, square wing panels and dark underwing in both sexes.

Sound:

Male display sound a dry nasal disyllabic "Ka-weerr". First note introductory and second longer and descending. Usually accompanied by back-throwing head motion. Female: dry harsh "aahrrrr aahrrrr aahrrrr ". Wings make a characteristic whistling sound.

Display-call male, wing noise:

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:berniedup, Licence,Link,

Sounds:Recorded by Patrik Åberg,http://www.xeno-canto.org ,CC license

Appearance:

Small, crepuscular, stocky heron with short legs. Adults unmistakable with black cap, black back, grey wings and white underparts. Immature less distinct, and may be confused with immature Squacco Heron, Little Bittern or Bittern. Differs from all these in distinct white spots covering both wings and back. Belly and breast are more widely covered in coarse streaking, not just the sides or upper chest. Legs just barely protrudes behind tail in flight.

Sound:

Most commonly hear call is a nasal, soft croaking "roack", like cross between Raven and frog.

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