#picoides

Black-backed Woodpecker (Picoides arcticus), T - male, B - female, family Picidae, order Piciformes, found across part of the Northern and Western US, Canada, and central Alaska

Black Backed Woodpecker (via U.S. Fish and Wildlife Service Northeast Region)

Nulhegan Basin Division, Silvio O. Conte National Wildlife Refuge.

Black-backed Woodpecker (Picoides arcticus), female, family Picidae, order Piciformes, found in the western US, Canada, and Alaska

American Three-toed Woodpecker (Picoides dorsalis), male, family Picidae, order Piciformes, found in the Rockies and Cascades of North America, as well as much of Canada and Alaska