Capercaillie, a large European grouse. The male bird weighs up to 14 pounds (6.4 kg). Its plumage is dark—black, brown, and gray—with a dark green breast and a patch of naked scarlet skin over the eye. It is found in large forests, and is often called the “cock of the woods.” It feeds on berries and buds and the tender shoots of fir trees. It was formerly common throughout northern Europe, but is now found only in the evergreen-covered mountains of northern Europe and Asia.
The capercaillie is Tetrao urogallus of the grouse family, Tetraonidae.