Coal Tit (Periparus ater)
Black Tern (Chlidonias niger)
Appearance like a small Great Tit in black and white. Back led-grey (olive in British sub sp.), underparts off-white. Diagnostic elongated, white neck-patch and big triangular bib. Double wing-bars, small head and short tail.
Sound:Song: Various repeated motifs, consisting of two to three notes with alternating accents. Slightly similar to Great Tit, but faster, not so metallic and with a less full tone. Can be mistaken for Marsh Tit when singing single or double notes, but tone is softer and notes more clearly separated (if disyllabic). Call: short soft and clear "piu", first rapidly rising and then falling in pitch.
Song:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCUnmistakable in breeding plumage, but otherwise easily confused with other marsh terns. Breeding plumage with black head and belly, but pale underwing and grey rump. When in immature and winter plumage it differs from Common and Arctic tern by smaller size and short, moderately forked tail, and from other marsh terns by slimmer body and wings (compared to White-winged tern), and relatively long, thin bill. Both immature and adult winter show dark front edge of wing, and characteristic dark shoulder patch at wing base. Back is dark in immature birds. Grey rump in all plumages. Flight usually different from Sterna-terns, with erratic dives for no apparent reason, and "aimless" change of direction. Note that when foraging over saltwater, flight becomes more Sterna-like.
Sound:Moderately vocal. Flight call a more or less clear "kleck, or a disyllabic "klee-ake" with accented first syllable. Sometimes slightly rolling "klirr-eke", but never as much as in White-winged Tern. Also a slightly harsher "kreek", but not as raspy as in Whiskered Tern.
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
CC