The other day we found a Three-toed Woodpecker on the newly fallen snow underneath the dining room window. Our guess is that he stunned himself when he came in contact with the glass. The poor distressed bird flew to this spruce tree just as W--- was reaching down to pick him up and move him to a more sheltered spot. He clung to the bark for quite some time and slowly recovered from his ordeal.
I identified this woodpecker by his colouring; I couldn't tell if he had three toes or not. The Black-backed Woodpecker is similar in colour but has a solid black back whereas the Three-toed Woodpecker has a black-and-white barred back. These woodpeckers are year round residents but usually stay well-hidden in the trees.