Female Red-bellied Woodpecker
The males have the deep red color on this female's neck all the way to the front where the orangish patch is.
Male Yellow-shafted Northern Flicker
The male of this species has a black moustache on the side that is red or black. The female doesn't have any, only a fine line of gray.
Watchful Male Pileated Woodpecker on Feeder Pole