Steller's Eider (Polysticta stelleri)
Arctic Tern (Sterna paradisaea)
Diagnostic, squarish head profile with flat crown, high bill base, steep forehead in all plumages. Male unmistakable with white and orange-buff underparts, white head with dark eye-patch, black collar and black back. Female mottled brown, but distinguished by head profile and blue wingbar with white edges. Identifiable at a distance by its habit of holding the tail raised clear of the water like a dabbling duck.
Sound:Male seldom heard. Display sound probably a clear whistle rising slightly and then falling in pitch, a bit like Golden Plover. Female more noisy with indistinct guttural sounds.
Display-calls:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCSounds:Recorded by Andrew Spencer,http://www.xeno-canto.org ,CC license
Differs from Common Tern in shorter head, and blood-red bill. Legs shorter, but tail streamers longer (extends well past wings in sitting birds). Underparts of primaries with sharply bordered dark trailing edge (diffusely bordered in Common Tern). Both primaries and secondaries transparent to sunlight. Crest less apparent than in Common Tern and underside greyer. Cheeks white just below the black cap, often in contrast to grey lower cheeks. Juveniles lacks buff coloured back.
Sound:Similar to Common Tern but higher pitched. Typical call a series of high pitched "tip-tip-tip", and longer, ringing, high-pitched "kriiiiii" calls. The drawn out "kree-aaahh" call falls less distinctly in pitch than Common Tern.
Calls:
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