Species:

Hawk-Owl (Surnia ulula)

Rook (Corvus frugilegus)

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Length (cm):
36-39
44-46
Wingspan (cm):
74-81
81-99
Weight (gram):
215-380
280-340
Size group:
Crow-size
Crow-size
Main Texts:
Appearance:

Hawk-like, partly diurnal owl with long tail and barred underparts. Plumage gives black and white impression. White face framed in bold, vertical black stripes. Eyes bright yellow. Wings fairly short, but not rounded. Tail long and graded. Flight pattern hawk-like, with rapid series of bursting wing-beats followed by glides. Often perched in the open, exposed in tree-tops.

Sound:

Seldom heard outside breeding ground. Alarm call a sharp, merlin-like "kwitt kwitt kwitt", or "ki-ki-ki". Song a 10 second rapid pulse of shivering notes with a bubbling quality. Rising slightly in pitch and then slowly falling.

Song:

Error loading Flash for sound!
See sound file


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:Eero Pätsi, Licence,Link.

Appearance:

An all shiny black crow with diagnostic bare, pale grey base of bill, and "baggy trousers". Juveniles lacks bare bill base and are difficult to separate from Carrion Crow. Young Rooks however, has a steeper forehead and more conical bill with less curved culmen. Tail is more rounded and base of wings more narrow. Flight action includes less gliding than Carrion Crow, and individuals are more spread when a flock flies.

Sound:

Makes similar caws as Carrion Crow, but is harsher, softer, flatter with less rolling r's. Also gives a varied song of soft gurgling and rattling sounds, interwoven with calls at breeding ground.

Contact call:

Error loading Flash for sound!
See sound file


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

Similar species (image):
Similar species (sound):
Silhouette Group:
Owls
Silhouette
Crow-like
Silhouette
Several different images of the species
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Several different sounds of the species
Error loading Flash for sound!
See sound file