Black; breast, belly, a spot above the eyes, and tips of the secondaries, white.
Uria Alle, Temm. Man. d'Orn. torn. 11. p. 928. Little Auk, Mont. Orn. Diet. & Supp. Bew. Brit. Birds, vol. 11. p. 408. Common Rotche, Selb. Illust. vol. 11. p. 430. pl. 81.
Entire length eight inches ten lines: length of the bill (from the forehead) seven lines, (from the gape) eleven lines; of the tarsus nine lines and a half; of the tail one inch seven lines; from the carpus to the end of the wing four inches nine lines.
(Winter plumage). Crown, region of the eyes, nape, sides of the breast, and all the upper parts of the body, deep black: wings pitchy brown; secondaries tipped with white; tertials broadly edged with the same colour: throat, front and sides of the neck, and all the under parts, pure white: sides of the head also white, variegated with dusky streaks, the white passing off towards the occiput in the form of an indistinct narrow band: bill black: irides dusky brown: tarsi and toes yellowish brown; membranes greenish brown. (Summer plumage). Head, cheeks, throat, and neck, deep sooty black; a small white spot above the eyes: the rest as in winter. (Young of the year). Distinguished by their shorter and smaller bill: plumage similar to that of the adult in winter. (Egg). Of a uniform pale blue: long. diam. one inch seven lines; trans, diam. one inch one line.
* A writer in Loudon's Magazine of Natural History, (vol. v. p. 418). asserts that in a large number of instances he has invariably found the eggs two in number.
Very abundant in the Arctic Regions, where it breeds. Met with occasionally on the British coasts during the winter season. Lays two eggs, which are deposited in the holes and crevices of the steepest rocks. Food, marine insects and Crustacea.