Appearance:

Approaching Eagle Owl in size, but shape more elongated, with head being extremely large. Differs from Ural Owl in yellow eyes, concentric markings in facial disks, bold white bars between eyes and black "beard". Wings and tail long. Characteristic pale patch at base of primaries shows in flight, but the species leaves an overall darker impression than Ural Owl. Tail with dark terminal band.

Sound:

Song: Cyclic, repetitive, very deep calls rising and falling in volume. Accented start and end of each "hooh". As the call fades away in volume, the speed accelerates. Sometimes disyllabic "ho-ho,ho-ho,ho-ho,ho-ho".

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

CC-sound:Gunnar Fernqvist, Licence,Link.

Appearance:

Large and bulkily built diver with heavy bill, square head profile and steep forehead. Usually holds bill pointed straight, not uptilted like White-billed Diver. Summer: White underparts and chequered black back. Black bill and head. Neck with white band. Winter; white underparts and dark back. Neck with incomplete black band, creating contrasting, jagged edge. Heavy, goose-like flight.

Sound:

Song: Like a slow Black-throated Diver. Pitch slowly rising with a register break, progressing into a cyclic, two to four syllable, motif. Also various vibrating eerie descending calls. Often used as sound effect in horror movies.

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

CC

CC-photo:jackanapes, Licence,Link.

CC-photo:jerryoldenettel, Licence,Link.

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