Species:

Marsh Harrier (Circus aeruginosus)

Rook (Corvus frugilegus)

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Length (cm):
48-56
44-46
Wingspan (cm):
115-130
81-99
Weight (gram):
405-800
280-340
Size group:
Crow-size
Crow-size
Main Texts:
Appearance:

Male; brown body, light grey wings with black tips, and brown coverts. Unmarked light grey tail. Female; dark brown with light brown wing-coverts, crown and throat. Tail warm brown and unmarked. Juveniles dark, chocolate-brown, with light buff crown and throat. Young males may show characters of both sexes. Tail fairly long and unforked. Glides with wings raised in shallow V.

Sound:

Call: A sharp "kwii-uuu" of about a seconds length, rapidly ascending in pitch, and ending on a falling tone.

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

Sounds:Recorded by Jarek Matusiak,http://www.xeno-canto.org ,CC license

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:
Raptors
Silhouette
Crow-like
Silhouette
Several different images of the species
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Several different sounds of the species