Species:

Rook (Corvus frugilegus)

Red-backed Shrike (Lanius collurio)

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Length (cm):
44-46
17-17
Wingspan (cm):
81-99
24-27
Weight (gram):
280-340
25-35
Size group:
Crow-size
Thrush-size
Main Texts:
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

Appearance:

Male with brown back, pinkish white underparts and a bluish grey head with a black eye mask. Female more dull with barred underparts. Juvenile like female, but upperparts also barred . Tail brown with white edges in all plumages. Females and juveniles easily confused with other southern/eastern or vagrant shrikes like; Brown Shrike, Isabelline Shrike, Woodchat Shrike and Turkestan Shrike. Differs from those in white sides of tail, barred rump, mantle and scapulars, scaly underparts and dark or yellowish base of bill (not pink).

Sound:

Call a hard "check check" (like striking two rocks together), and a variable nasal "twee" Song surprisingly varied with many expert imitations of small passerines, interwoven with bell-like ringing and dry chirping sounds. May be confusing and hard to identify if bird not seen. Song not very loud, but phrases can be very long.

Alarm call, song:

Error loading Flash for sound!
See sound file


Distribution:

Xeno-canto: map

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

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