Appearance:

All black swift with small white throat patch. Very difficult to separate from Pallid swift and Plain Swift. Pallid Swift; brownish plumage tone (best seen against darker background), bigger throat-patch than swift, scale pattern on body more prominent, wing-tips slightly rounded, "saddle" darker than wings, and more contrast between darker outer primaries and inner. Plain Swift; throat patch smaller and more diffuse than swift, wings and body more slender, tail noticeably deeper forked.

Sound:

A shrilling trill "zreeeee" of about 1 -2 seconds length, gradually rising in pitch with accentuated firs half, then falling from the middle of phrase. Often continued with a dry lower pitched "trrrrrr" before calling again. Very vocal at breeding area, and often a flock will call together. Despite being quite similar to Pallid Swift, the call is probably the best field character to separate the two. Pallid puts the stress on the ending of the call, followed by a quick fall in pitch (dynamics like moaning with a quick release). Plain Swift calls similar to Common Swift, but differs in slightly fluctuating pitch during the call, and a loss of resonance towards the ending (thinner sounding).

Song/contact call:

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

Appearance:

Small dabbling duck. Males unmistakable with broad white supercilium and high contrast between the dark mottled breast and the lighter flanks (visible at considerable distance). Female mottled in light brown colours with typical supercilium and contrasting eye-stripe. White spot at base of bill. Throat much lighter than in Teal. Both sexes with dark and fairly long bill. Head gives a square impression due to the flat crown. Speculum in flight shows narrow white edges, lacking Teal's broad front edge. Agile flight, but lacks the twists of Teals.

Sound:

Male display sound a characteristic dry rattling, like the sound of running fingernails along the teeth of a comb. A bit similar to Ptarmigan. Also heard at other times than when courting. Female: like female Teal, but typically a bit deeper and shorter calls.

Display-call male:

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