The Yellowhammer or Yellow-shafted Northern Flicker (Colaptes auratus) is a woodpecker of medium-size that resides in eastern portion of North America.

Adults are brown with black bars on the back and wings and a tail that is dark on top with yellow under the tail and underwings and have yellow shafts on their primaries. Their breast and belly are beige with black spots. They have a grey cap, a beige face and a red bar on their neck with a black necklace and show a white rump while in flight.