Appearance:

Slightly smaller than Eider. Male at close range unmistakable. At a distance the black back is diagnostic. Female similar to female Eider, but feathering on bill is not reaching nostrils, giving the bird a peculiar "smile". Head shape is less triangular with a steeper forehead, and nail of bill is black. V-shaped barring on flanks.

Sound:

Male: Calls similar to Eider but easily distinguished by the vibrating quality. A "aaaooooooh" (shorter in duration than Eider) Starting on a low note, slowly ascending and ending on a descending note with a distinct vibrato/pulse. Often in the form of three calls: "oohh, a-ohhh hahahaoohohohoh". Usually accompanied by the female "ga ga ga ga".

Display-calls:

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

CC

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

Appearance:

A dark, often secretive, wader. Quite similar to Wood Sandpiper, but differs in dark underwings, only small white spots on back, defined border between speckled chest and white belly, broad dark markings on tail and a supercilium that does not reach behind eye. Leaves an overall much darker impression than Wood Sandpiper. Particularly in flight.

Sound:

Totally different from Wood Sandpiper. Sharp, penetrating calls. Display call a high-pitched "kee-kleeoo-eet", continuously repeated with a wave-like motion in pitch. Other common calls have similar timbre and tone with different phrasing like; "klooeett -klee-klee-klee-klee-klee" and a rising pitch.

Flight call:

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

CC-sound:Peter Boesman, Licence,Link.