Cetti's Warbler (Cettia cetti)
Long-tailed Jaeger (Stercorarius longicaudus)
Small, warm buff warbler with skulking behaviour, but conspicuous song. Similar in size to Reed Warbler, but with short, rounded wings and rounded tail. Build fairly compact, but bill thin and slender. Supercilium thin and dull. Cheeks and underparts greyish white, lacking the purer white belly of confusion species. Pale eye-ring. Under tail-coverts usually brown with pale fringes. Often flicks tail or holds it raised. Usually hides among undergrowth, and shows itself only when moving from one shrub to another.
Sound:Contact call a short, metallic, ascending "vitt". Often given in rapid series. Song diagnostic, and readily given throughout the year. Phrases last from 2 - 5 seconds, consisting of a few loud, clear and rapid glissandi, given in approximately same register. E.g. "cetti cetti cetti", usually with a few introductory notes, and some variation to the phrase. Overall a very explosive, and with a staccato rhythm.
Song:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCBreeding 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