Capercaillie (Tetrao urogallus)
Arctic Tern (Sterna paradisaea)
Very large and heavy bird with heavy bill and rounded tail with straight outer tail-feathers. Both sexes lack wing-bars. Males much bigger than females. Plumage mostly black with brown wings and yellowish bill. Females mottled brown with brick-red breast, throat and chin. Lower back greyish, contrasting with rufous, heavily barred, tail.
Sound:Display-sounds from male unmistakable. Four phased song: First a slow introductory, double-tapping phase which suddenly bursts into an accelerating crescendo followed by a distinct pop. Then closing with grinding and hissing sounds. Female calls with a deep nasal "kok kok".
Song/display:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCDiffers 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