The King Eider — Somateria Spectabilis (Linnæus)
Essentially an Arctic species, and rarely wandering south even in winter, this species is a somewhat scarce visitor to our shores, though a good many examples have been taken, especially in the north. The large raised orange tubercle at the base of the bill and the dark clear-cut V mark underneath the chin, form fairly distinctive characters by which this species may be recognised, though an imperfect V mark is sometimes found on the Common Eider. The sickle-shaped secondaries are black and not white, as in the Common Eider. The female is smaller, but otherwise resembles the Common Eider, though on close examination she may be distinguished by the shape and extent of the backward prolongation of the beak sheath. Length 21 in.; wing 10·5 in.