Photo by javier_aznar_photography | This tree is a pantry to an acorn woodpecker (Melanerpes formicivorus), holding its acorn stash. The species has unusual behaviors, such as living in large groups, breeding cooperatively, and hoarding acorns. They wedge acorns into the holes they've made in the trunk. This bird was photographed in Arizona, but they're distributed from Canada to Colombia. Follow javier_aznar_photography to see more natural history images. #woodpecker #bird #arizona