Acorn Woodpecker at granary tree with acorn in bill/beak.Acorn Woodpecker at granary treeAcorn WoodpeckerAcorn WoodpeckerAcorn Woodpecker at granary tree with acorn in bill/beak.Acorn Woodpecker, with shelled piece of acorn in its billAcorn Woodpecker, inserting acorn into granary treeAcorn Woodpecker at granary tree with acorn in bill/beak.Acorn Woodpecker at granary treeAcorn Woodpecker hanging upside downAcorn Woodpecker poking out its head from nestAcorn Woodpecker at granary tree with acorn in bill/beak.Acorn Woodpeckers, male and female, at granary tree with acorn in bill/beak.Acorn WoodpeckerAcorn Woodpecker at granary treeAcorn Woodpecker at granary treeAcorn WoodpeckerAcorn Woodpecker, crest raised in alarm due to nearby hawkAcorn WoodpeckerCupertino, CA