Birds of Svalbard
thick-billed murre or Brünnich's guillemot (Uria lomvia)
Adult birds are black on the head, neck, back and wings with white underparts. The bill is long and pointed. They have a small rounded black tail. The lower face becomes white in winter. This species produces a variety of harsh cackling calls at the breeding colonies, but is silent at sea.
black-legged kittiwake (Rissa tridactyla)
It has a white head and body, grey back, grey wings tipped solid black, black legs and a yellow bill. Occasional individuals have pinky-grey to reddish legs, inviting confusion with red-legged kittiwake. In winter, this species acquires a dark grey smudge behind the eye and a grey hind-neck collar.
Glaucous gull (Larus hyperboreus)
This is a large and powerful gull, second largest of all gull species and very pale in all plumages, with no black on either of the wings or the tail. Adults are pale grey above, with a thick yellow bill. Immatures are very pale grey with a pink and black bill.
parasitic jaeger (Stercorarius parasiticus)
Identification is complicated by similarities to long-tailed jaeger and pomarine jaeger, and the existence of three colour morphs. Light-morph adults have a brown back, mainly white underparts and dark primary wing feathers with a white "flash". The head and neck are yellowish-white with a black cap and there is a pointed central tail projection. Dark-morph adults are dark brown, and intermediate-phase birds are dark with somewhat paler underparts, head and neck. All morphs have the white wing flash.
Arctic tern (Sterna paradisaea)
The Arctic tern is a medium-sized bird around 33–36 cm (13–14 in) from the tip of its beak to the tip of its tail. The beak is dark red, as are the short legs and webbed feet. Like most terns, the Arctic tern has high aspect ratio wings and a tail with a deep fork.
The adult plumage is grey above, with a black nape and crown and white cheeks. The upperwings are pale grey, with the area near the wingtip being translucent. The tail is white, and the underparts pale grey. Both sexes are similar in appearance. The winter plumage is similar, but the crown is whiter and the bills are darker.
Common eider (Somateria mollissima)
It is characterized by its bulky shape and large, wedge-shaped bill. The male is unmistakable, with its black and white plumage and green nape. The female is a brown bird, but can still be readily distinguished from all ducks, except other eider species, on the basis of size and head shape.
Black guillemot or tystie (Cepphus grylle)
Adult birds have black bodies with a white wing patch, a thin dark bill, and red legs and feet. They show white wing linings in flight. In winter, the upperparts are pale grey and the underparts are white. The wings remain black with the large white patch on the inner wing.
Northern fulmar (Fulmarus glacialis)
This species is gray and white with a pale yellow, thick, bill and bluish legs.
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Text Source of information: Wikipedia