It's the golden fronted woodpecker. A woodpecker of the genus Melanerpes, related to red headed, red bellied and gila woodpeckers.

Melanerpes. Includes also the golden fronted, red bellied, and red headed.

Red headed, Lewis', acorn, Gila, golden fronted, and any woodpecker in subfamily Melanerpes.

Acorn, red bellied, golden fronted, red headed, Lewis' woodpeckers.

That would be so unusual that birders from all over the country would be flocking to see it. It is probably a Northern Flicker. They are very similar in appearance (although a different species), and there is a yellow shafted race that is even more so. See the link below. Check red bellied woodpecker. It is a close cousin to the golden fronted and is very similar in appearance. It is not common in your area, but is present, and looks much more like a golden fronted than a flicker does.