Audubon's web site calls this bird "an uncommon and poorly known eider of the high Arctic." Although they know it's breeding population has declined by 96% in one area of Alaska, the health of the remaining population remains a mystery. This was the only one we saw in the four days we were there. It was feeding in a small pond southwest of town, thus the muddy appearance of its neck.
They go on to say that "Its remote habitat and bizarre, ghostly appearance contribute to its aura of mystery."
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Africa (entire continent rather than south of Sahara)
AN
Antarctica
AO
Atlantic Ocean
AU
Australasia (Wallacea (Indonesian islands east of Wallace's line), New Guinea and its islands, Australia, New Zealand and its subantarctic islands, the Solomons, New Caledonia, and Vanuatu)
PAL
Eurasia (Europe, Asia from the Middle East through central Asia north of the Himalayas, Siberia and northern China to Japan)
IO
Indian Ocean
LA
Latin America (Middle and South America)
MA
Middle America (Mexico through Panama)
NA
North America (includes the Caribbean)
NO
Northern oceans
OR
Oriental Region (South Asia from Pakistan to Taiwan, plus Southeast Asia, the Philippines, and Greater Sundas)