The emperor is a medium-sized goose -- 26 to
28 inches long and weighing about 6 pounds. Both
sexes are similar in appearance and size.
Immature emperor geese are all blue-gray, with
whitish scaling and spotting.
Usually found on or near the ocean, most
emperor geese spend the entire year on the west
coast of Alaska, on the Aleutian Islands, or
along the eastern coast of Siberia. A few
populations, however, occasionally winter as far
south as California, or even Hawaii.
Emperor geese feed on sea and shore
vegetation, as well as a variety of small sea
genus & species Chen canagica
All About Birds http://www.allaboutbirds.org/guide/Emperor_Goose/id
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