Sea Duck Joint Venture

A Conservation Partnership under the North American Waterfowl Management Plan

Sea Duck Joint Venture

Sea Duck Joint Venture

King Eider

Somateria spectabilis

King eiders are a moderately large sea duck, weighing 1200-2100 g (2.6 – 4.6 lbs). Male king eiders are one of the most ornately plumaged ducks in North America. In breeding plumage (late fall through midsummer), males sport a large orangeyellow knob between their bill and forehead. Their forehead, crown, and nape is pearl blue, with iridescent pale green cheeks and a reddishorange bill. The lower portion of their head, neck, upper back, and breast is white with the remainder of the body black. The longest feathers along their upper flanks have triangular extensions that form a sail-like projection on their back.

Sea Duck Information Series fact sheet

King Eider Species Knowledge Summary and Information Needs [PDF]

Aerial Identification video

King Eider Photo Gallery

King Eider Range Map


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The Sea Duck Joint Venture promotes the conservation of all North American sea ducks through partnerships by providing greater knowledge and understanding for effective population and habitat conservation and management.