The
Spectacled Eider is a unique sea-duck that can be identified by the
"goggles" that are apparent on both sexes, and in all seasons. They
used to breed around most of the Alaskan coastline, but numbers there have
precipitously declined in recent decades. Much stronger populations
are found in Siberia, although there is also some evidence of a decline
there. The ingestion of lead shot or a chemical contaminant may be
primary contributors to the species' decline. Oil and gas drilling in their
primary habitat may also be hurting the species.
Habitat: Spectacled Eider are found on Alaskan
tundra near the coastline in summer, although they can sometimes be found
well inland. At other seasons they are typically found in the open
ocean far offshore.
Diet: Mostly feeds on mollusks when available, but
will also feed on aquatic (and rarely terrestrial) insects, crustaceans, and
plant material.
Behavior: Strong divers, much of their food is
obtained by diving and swimming underwater. During the summer
breeding season, they will also behave like dabbling ducks in shallow
freshwater ponds, and will also sometimes feed on land when foraging on
plant material.
Nesting: The Spectacled Eider nests on Alaskan
tundra, typically very near to the shoreline of a freshwater pond or lake.
The nest is usually a small depression in a ridge or other small rise near
the water, lined with down and vegetation. The female alone incubates
the eggs. Upon hatching, the young leave the nest very soon and gather
food themselves, although the female will protect them from predators.
Song: Generally a silent species, although the
female will occasionally give some quiet clucking sounds.
Migration: Spectacled Eiders in the North American
part of their range breed in multiple locations around the western and
northern Alaskan coast. In winter, populations are typically found far
out in the Bering Sea, far from shore.
Similar Species:
Males in breeding plumage are distinctive if seen well. General shape
and structure of the species may lead to confusion with the
Common Eider if not seen well.
Conservation Status: The
IUCN
currently lists the Spectacled Eider as a species of "Least Concern",
largely due to the large range of the species. However, the U.S. Fish
and Wildlife Service lists the species as "threatened throughout its range"
in Alaska. Numbers have sharply declined in recent decades for reasons
that aren't completely understood. Populations are evidently much
stronger in other parts of its circumpolar range, such as populations in
Russia.
Photo Information: February 23rd, 2006 - Alaska
Sea Life Center in Seward, Alaska - Photo by Laura Whitehouse of the U.S.
Fish and Wildlife Service - Photo licensed under
Creative
Commons Attribution 2.0 Generic license.