Appearance:

Adults black, or dark grey with big white/off-white, crescent-shaped chest patch. The light grey fringes to the flight-feathers gives the whole wing a silvery look, especially in flight. Juveniles have a more brownish base colour, with lighter scaly underparts and just a vague chest patch. The whole bird gives a more slender impression than Blackbird, and the wings are longer. Flight more determined and direct than in Blackbird.

Sound:

Alarm call a series of "chok-chok". Thicker and more resonant than Redwing. Song a primitive, plaintive series of short phrases. Often with only one or two syllables. Interspersed with eerie, higher pitched sounds, reminiscent of Song Thrush.

Song:

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

Appearance:

A small, compact martin with short, forked tail and pure white rump. Underparts shiny white (including throat and vent). Upperparts dark with shiny metallic glow to head and back. Juveniles overall more dull, with white tips to tertials and dusky, brownish upperparts. Flight determined and steady. Glides more than Sand Martin, with less frequent change of direction.

Sound:

Contact call a rolling "krreet". Similar to Sand Martin but noticeably dryer, more rolling and less raucous. Typically varies the pitch of the call more. Song a merry improvisation of chirping, contact call-like sounds (sometimes recalling a budgerigar). Warning call a sharp and plaintive "tsreee".

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