160. Somateria dresseri 
AMERICAN EIDER. 23 inches 
Male. Above, top of head black, divided in the back by a white 
“tripe ; sides of head, neck and upper back white, tinged with green; 
lower back, wings and tail black. Below neck and breast white; 
belly black; bill and feet greenish. Female and Immature. 
Above, brown, streaked with black. Below, yellowish streaked 
with brown. Also known as Sea Duck and Llackand White Coot. 
An expert diver. ; : 
Breeds. On islands off the coast of Maine and northward. <A 
winter visitor October to April; common off Chatham and Nan- 
tucket. 
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