[Scand.] A sea-bird, which spends the winter on the Arctic seas, and when spring comes swims with its mates to the shore. The female makes a large, loose nest of dry grass, and lines it with a thick layer of down plucked from her own breast. The natives rob the nests 0/ this down, and when it is replaced rob them a second time. Then the male bird strips himself of his down to line the nest, which is now left undisturbed. The female lays from six to ten pale-green eggs. Eider down is valuable for its softness and lightness, and the eggs are much liked as food. The eider duck does not fly well, but is early taught to swim and dive, the mother going down to the sea with a little one under each wing.