Species:

Pomarine Jaeger (Stercorarius pomarinus)

Red-backed Shrike (Lanius collurio)

Change species:
Main Images:
Length (cm):
46-51
17-17
Wingspan (cm):
125-138
24-27
Weight (gram):
600-900
25-35
Size group:
Crow-size
Thrush-size
Main Texts:
Appearance:

Pale and dark morphs. Often difficult to distinguish from Arctic Skua. Adults with broad, spoon-shaped streamers. These are moulted twice a year, so adults lacking these are not uncommon. The dark cap reaches around the bill base and down to the chin. Breast band in pale morph is generally broader and more pronounced than in Arctic Skua, but in some males it is lacking altogether. Leaves an overall more robust and powerful impression than Arctic. Wings are broader than the distance from trailing wing-edge to tip of tail (streamers excluded), while the hand seems shorter. The light patches at the base of the primaries are more obvious, and many young birds shows a characteristic double patch, formed by additional white base of greater primary coverts (like Lesser Spotted Eagle). Rump and vent of juveniles usually boldly barred, in contrast to unbarred back and belly (visible even in dark morph). Streamers never pointed (in any plumage). Flight pattern straighter, and more determined than in Arctic Skua.

Sound:

Short "kea" or "ke", and various mewing calls, usually deeper pitched than Arctic Skua. Also a characteristic, laughing and vibrating "kayayayayaya", heard mostly on breeding ground.

Alarm/flight 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

CC-photo:loarie, Licence,Link.

CC-photo:jerryoldenettel, Licence,Link.

Sounds:CC. http://www.xeno-canto.org .Recorded by Andrew Spencer.

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:
Gull-like
Silhouette
Thrush-like
Silhouette
Several different images of the species
ImageImageImageImageImageImageImageImage
ImageImageImageImageImageImageImageImage
Several different sounds of the species
Error loading Flash for sound!
See sound file