Greater Spotted Eagle (Clanga clanga)
Long-tailed Jaeger (Stercorarius longicaudus)
Medium sized eagle with long, evenly broad wings and relatively short tail. Easily confused with Lesser Spotted Eagle, Clanga pomarina. Flight feathers usually paler than the dark coverts, and head and body same colour as wings. Only diffuse pale patch at base of primaries on upper wing (marked in C. pomarina). Pale base of primaries shows as "comma", but usually lacks pale base of under primary coverts, contrary to C. pomarina. Broader wings than C. pomarina, and the squarish wing-shape, short neck and tail recalls White-tailed Eagle (H. albicilla). U-shaped white patch at base of tail. Immature birds even darker than adults, and show white spots along upper wing coverts in two narrow bands. Very long "fingers" overall, and elongated 7th primary. Soars and glides on horizontal wings with drooping hand (as C. pomarina). Bill obviously heavier than C. pomarina, and yellow base and gular region stands out. Round nostrils.
Sound:Vocal at breeding ground, and when courting. Short, barking, high-pitched whistles, not unlike a small dog. Slightly lower pitched than C. pomarina and with a fuller tone, but very similar.
Call:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCCC-sound:David Farrow, Licence,Link.
CC-photo:Ronald Bontrop, Licence,Link.
CC-photo:Paul Schrijvershof, Licence,Link.
CC-photo:CharlesLam, Licence,Link.
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:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCSounds:Recorded by Andrew Spencer,http://www.xeno-canto.org ,CC license