The Common Eider is a large sea duck which can be found along the northern coasts of Europe, North America, and eastern Siberia. It breeds in the Arctic, but winters south in large flocks on coastal waters.
Common Eiders are the largest of the four species of eider. They are abundant in North America and Europe (where they are the largest species of duck), with an estimated population of 1.5 to 2-million birds.
Common Eiders build their nests close to the ocean in colonies of up to 10,000 birds or more. Eider nests are lined with eiderdown, soft feathers plucked from the female duck's breast.