noun \ˈī-dər\

Definition of EIDER

:  any of several large northern sea ducks (genera Somateria and Polystica) having fine soft down that is used by the female for lining the nest —called also eider duck
:  eiderdown 1

Origin of EIDER

Dutch, German, or Swedish, from Icelandic æthur, from Old Norse æthr
First Known Use: 1743

Other Birds Terms

aerie, bunting, clutch, covey, hackle, ratite, rictus, ruff, skein, zygodactyl


noun    (Concise Encyclopedia)

Any of several species of large diving ducks (in tribes Mergini and Somateriini) that are heavy and round-bodied, with a humped bill that produces a characteristic sloping profile. Eiders are the source of eiderdown, feathers that the hen plucks from her breast to line the nest and insulate her eggs. Eiderdown is used as a warm filling for jackets, pillows, quilts, and sleeping bags. Hens are mottled brown, but drakes (males) are boldly patterned, with a green pigment on the head. Eiders live in the cold far north.


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