When I say "hammering," I mean it. The sound of their bill striking a tree really does sound like someone hitting the tree with a hammer. It's that loud. Keep in mind that the Pileated Woodpecker is huge - 16-19 inches long, so they're capable of making quite a racket.
We watched the pair of woodpeckers go from tree to tree in back of the house last Wednesday morning, but I was only able to capture this one with the camera.
Another cool Keweenaw experience.
All is well in the Keweenaw.