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:

Differs from Arctic Tern in longer head, and more orangy red, rather than deep red, bill. Tip of bill usually black. Legs longer, but tail streamers shorter than AT. Underparts of primaries with diffusely bordered dark trailing edge (sharply bordered in Arctic Tern). Upper side of primaries with dark wedge (less apparent in winter). Secondaries opaque. Crest more apparent than in Arctic Tern and underside whiter. Juveniles with buff back.

Sound:

Similar to Arctic Tern but deeper. Lacks latter's high pitched "tip-tip-tip" call, and the drawn out "kree-aaahh" call falls more distinctly in pitch.

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

CC-sound:Eetu Paljakka, Licence,Link.