Appearance:

Usually recognizable by size alone. Distinctly smaller than any congener. Pale wing-panel formed by inner coverts is striking in all plumages, especially in flight. Male with contrasting black and white/buff plumage. Female with dark, but pale fringed back and streaked throat. Immature with streaked, bittern-like plumage, and wing-panel is brown-spotted. Skulky behaviour, and most active at dusk or after dark. Mostly seen in flight when crossing open water. Flight action rapid and clipping, and landing is preceded by short glide.

Sound:

Mostly silent except in breeding season. Song is a series of short, deep, frog-like "gorrk", repeated every 2 seconds. Tone is muffled and hollow, but far-carrying. Flight-call a sharp "ki-ke-ke" or a nasal "ke".

Song:

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

Sound recording:Creative Commons,www.xeno-canto.org,Jarek Matusiak,http://creativecommons.org/licenses/by-nc-sa/4.0/

Appearance:

White with black wing tips and yellow-buff at back of head. Juveniles brown with small pale speckles, white u-shaped rump patch and pale underparts. Fully coloured only after 5 years, and patchy, intermediate plumages often seen. Unmistakable bird at close range or with favorable light, but can be confused with shearwaters at a distance and/or in strong wind. Differs from those by long tail and much longer neck and head. Alternates between powerful, even and shallow wing-beats and glides. Flight becomes more shearwater-like in strong winds.

Sound:

Heard mostly at breeding ground. Even, rhythmical series of harsh "harrr, harrr, harrr,".

Social interaction:

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

Sounds:Recorded by Elias A. Ryberg,http://www.xeno-canto.org ,CC license