Acorn Woodpecker, Santa Monica Mountains, CaliforniaAcorn woodpeckers love their acorns — so much so that they drill special holes in tree bark to store them for later use. In this photo, you can see the perfectly sized hole for each acorn. They are primarily a western and tropical species, ranging from California, down through northern South America. I photographed this one in the Santa Monica Mountains of California. Nikon D800 with Nikkor 200-400mm lens (at 400mm) ISO 800, f/4 at 1/250th of a second.