Three-toed Woodpecker

I'm uploading another photo of a Three-toed Woodpecker, as these are seen so rarely, and I usually can't get even half-decent photos when I do actually see one. Saw this one at Brown-Lowery Provincial Park. These birds look so similar to the Black-backed Woodpecker, but the latter does not have the white "ladder" markings down its back. I love the little splash of deep yellow on the male's forehead. Not the best quality, as image was taken in dense forest, so low light.