159. Somateria mollissima borealis. 23 in.
Base of bill extends on either side of forehead in a point, a mark that will distinguish it from the next and very similar species, in any plumage. The female Eider presents a most remarkable difference in plumage from that of the male, and, unlike the females of most species, is a very handsome bird.
Nest.—Of grasses lined with down; concealed in tall grass or under bushes; the 6 to 10 eggs are greenish-drab (3.00 × 2.00); May, June.
Range.—Breeds on Labrador and Greenland coasts.
AMERICAN EIDER
160. Somateria dresseri. 23 in.
This is the Eider that is usually seen on the Atlantic coast and is the only one that breeds south of Labrador. The base of the bill, that encroaches on either side of the forehead is rounded, and broader than that of the last. They nest from Maine (rarely) northward, and winter south to Long Island.
KING EIDER
162. Somateria spectabilis. 23 in.