Tundra Swan (Cygnus columbianus)
Bar-tailed Godwit (Limosa lapponica)
Easily confused with Whooper Swan, but yellow on bill restricted to a rounded patch. May sometimes extend towards the bill-tip, but never beyond nostrils. Angle of mouth bold black. Gives a more compact impression than Whooper, due to shorter neck. Head shape noticeably more rounded, and seemingly larger. Juveniles paler grey than Whooper, with the same bill pattern as in adults, but in faint, pale yellow and pink. Flight easy and goose-like.
Sound:More vocal than other swans. Both higher pitched and deeper sounds. Birds on the water often gives crooning, crane-like notes with less defined pitch. Tone is less full-bodied in these calls. Flight call a deep, yelping, soft barking sound. Each call short, with a "helpless" quality.
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
CCMost likely to be confused with Black-tailed Godwit, but easily recognized in flight by plain dark wings, white wedge on back and barred tail. More difficult to identify when not flying. Generally more compact, heavier built and less upright than Black-tailed, and with clearly upcurved bill and shorter legs. Belly always unmarked. Base of bill dark in summer and pinkish in winter and in juveniles. Back with arrow-shaped streaking. Adult winter also streaked, and the pale supercilium reaches behind the eye.
Sound:Quite vocal at breeding ground but mostly silent elsewhere. Varied repertoire of mewing and sharp sounds, some resembling Black-tailed, some almost Snipe-like. Contact call a sharp "kwee-kee-wee-kee", with alternating high and low pitch, and decreasing intensity. Display call a hard and sharp "kuwek-kuwek-kuwek-kuwek", with emphasis on second syllable.
Display:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCSounds:Recorded by Patrick Åberg,http://www.xeno-canto.org ,CC license