The Black-backed Woodpecker, (Picoides arcticus), is a medium-sized woodpecker. Adults are black on the head, back, wings and rump. They are white from the throat to the belly; the flanks are white with black bars. Their tail is black with white outer feathers. Like the similar
American Three-toed Woodpecker, this bird also has three-toed feet. The adult male has a yellow cap.
Their breeding habitat is boreal forest across Canada, Alaska and the north-western United States. They nest in a large cavity in a dead tree or a dead part of a tree. The pair usually excavates a new nest each year. The female lays 3 or 4 eggs.
These birds remove bark from trees in search of insects or pick them up from the bark. They mainly eat insects, spiders, fruit and nuts.