483. 4. Uria Townsendii, Aud. Slender-billed Guillemot.

Plate CCCCXXX. Male and Female.

Bill shorter than the head, straight, slender, much compressed, acute,

black; feet yellow, claws black; plumage very soft, close, blended, as

in the other species; wings small, very narrow, convex, falcate; first

quill longest; secondaries incurved, obliquely rounded; tail extremely

short, narrow, rounded, of twelve weak, rounded feathers. Upper parts

brownish-black, the feathers of the back terminally margined with

light grey; lower parts, cheeks, a transverse band on the nape, both

eyelids, and a longitudinal band on each side, formed by some of the

scapulars, white, some dusky streaks on the hind part of the sides,

and the lower wing-coverts greyish-brown, some of them whitish. Young

in autumn with the upper parts brownish-black, the feathers terminally

margined with brown; the occipital band merely indicated by some

lighter feathers, and the scapular band brownish or chestnut-red;

lower parts of a curious mottled appearance, the feathers being

brownish-grey at the end, but in the rest of their extent white, that

colour appearing more or less on all the parts, and shewing a patch on

the hind part of the sides.

_Adult_, 10; wing 5-2/12. _Young_, in autumn, 9-3/4; wing 5-1/12.

Abundant on the north-west coast of America, not far from the Columbia

River.

Slender-billed Guillemot, Uria Townsendii, Aud. Orn. Biog. v.

v. p. 251.

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