Black Tern (Chlidonias niger)
Pink-footed Goose (Anser brachyrhynchus)
Unmistakable 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
CCPink bill and legs distinguishes it from Bean Goose. This can however be a deceiving character in poor light. Also differs from Bean Goose by pale grey,not brownish, upperparts. The darkest part of the body is the flanks (Bean Goose have equally dark flanks and back).
Sound:Similar to Bean Goose and White-fronted Goose, but more nasal and a little higher pitched than the first, and less musical and laughing than the second. Easily told from Greylag Goose by frequent nasal, high pitched "wink-wink".
Contact 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
CCSounds:Recorded by Elias A. Ryberg,http://www.xeno-canto.org ,CC license