Appearance:

Dark eyes and dark wedge dividing the facial disks. Bill pale grey, not yellow like Ural Owl. Plumage rather indiscreet, with colour ranging from grey to rufous brown. Body shape characteristic; tubby and barrel-like, with short tail and short rounded wings. Flight with characteristic frequent glides on arched wings.

Sound:

Song a resonant descending "hoooooo". After 2-3 sec. typically followed by a slightly ascending, vibrating "hohohohohoho" and quickly another descending "hooooooo". Complete phrase: "hoooooo, hohohohohoho-hoooooo". May omit parts. Other often heard sounds; a sharp, short, disyllabic "kiu-wik". First syllable ascending then descending, and last ascending in pitch.

Song, contact 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-photo:hehaden, Licence,Link,

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