Pomarine Jaeger (Stercorarius pomarinus)
Greenshank (Tringa nebularia)
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:
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-photo:loarie, Licence,Link.
CC-photo:jerryoldenettel, Licence,Link.
Sounds:CC. http://www.xeno-canto.org .Recorded by Andrew Spencer.
Large Tringa with upcurved bill. The mainly white and pale grey plumage (and head) gives it a pale appearance. Upper parts speckled in black in summer plumage. Upper side of wings rather dark, back lighter grey with conspicuous long white wedge. Tail white, with diffuse grey barring. Back of juveniles with v-shaped scales/fringes. Legs greenish to grey-green. Wing beats quite deep and sometimes with "slow motion" like quality.
Sound:Most heard is a characteristic, trisyllabic "tew-tew-tew" (sometimes two or four syllables). Can resemble redshank, but pitch more stable, and not falling notably. Each syllable is clearly separated and equally emphasized. Song a clear disyllabic "cloo-eeee", repeated in cycles but each phrase clearly separated. At close range a short creaky sound is audible (between each phrase). Redshank may sing in a slightly similar way, but in continuous, linked phrases.
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
CC