Red-headed Woodpeckers (Melanerpes erythrocephalus) are one of the most easily recognizable bird species, but little is known about their social system and breeding activity due to their lack of sexual dimorphism. We observed a dense population of Red-headed Woodpeckers and found evidence of cooperative breeding. The habitat at our site may promote cooperative breeding because it has a high density of utility poles that woodpeckers use for nesting, roosting, and caching food.