Not figured.
Tail much rounded, the middle feathers being an inch longer than the
lateral; bill of moderate length, slender, black; feet vermilion;
head, neck, all round, lower parts, rump and tail, white, the lower
parts tinged with pink, which soon fades; a narrow collar of black;
fore part of back, scapulars, and both surfaces of wings light
greyish-blue; tips of scapulars and secondaries white.
_Adult_, 14; wing 10-1/2.
Arctic Seas.
Larus Rossii, Cuneate-tailed Gull, Swains. & Rich. F. Bor.
Amer. v. ii. p. 427.
Ross's Gull, Larus Rossii, Aud. Orn. Biog. v. v. p. 324.
*** Tail even.