Northern Flicker hybrid or integrade?

This flicker has been visiting our feeders recently. For how long, I don't know - I just noticed him a couple days ago. I have looked for images of flickers similar to this one but have not seen one quite like this. Maybe they are all different? It is orange shafted, like the flickers of the west usually are. However that marking on the back of his head is not like the the other hybrids I've seen in photos. They usually show a crescent shape. This is more of a v with the two lines barely coming together in the back. It's not real even and almost looks like someone used a magic marker on this bird.

I'd appreciate any comments on flicker hybrids from folks that have experience with them.