Common Goldeneye
Bucephala clangula

f6.7 @ 1/3200s, ISO:800, Nikon D3S w 500mm and 1.7X teleconverter

"Common Goldeneye," Wikipedia, the free encyclopedia. Females range from 4050 cm (1620 in) and weigh approximately 800 g (28 oz). The species is named for its golden-yellow eye. Adult females have a brown head and a mostly grey body. Their legs and feet are orange-yellow.
Cape Cod Canal, Bourne, Massachusetts