Species:

Marsh Harrier (Circus aeruginosus)

Long-tailed Jaeger (Stercorarius longicaudus)

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Length (cm):
48-56
48-53
Wingspan (cm):
115-130
105-117
Weight (gram):
405-800
240-350
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:

Breeding plumaged adults with streamers unmistakable (streamers comprising two thirds of total tail length). Adult plumage shows less variation than in other skuas. No hint of breast band, and transition between pale belly and darker vent very diffuse. No white patches at base of primaries of underwing in adults. Juveniles easily confused with juvenile Arctic Skua, but are more slender. Wings narrower and primaries and tail longer. Juvenile Arctic Skua shows white patches at base of primaries on both sides of wings, juvenile Long-tailed only on underwing, and on first few primaries of upper. Barred rump and tail coverts in juveniles. Flight elegant and buoyant.

Sound:

Calls sharp and less full-bodied than Arctic Skua, and not so mewing. Short, double-accented "kew-wev" or short "kerk" in agitation. Also a long drawn-out "keeeeaah", resembling both Arctic Skua and Common Gull.

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

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

Similar species (image):
Similar species (sound):
Silhouette Group:
Raptors
Silhouette
Gull-like
Silhouette
Several different images of the species
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Several different sounds of the species