acorn woodpecker

Are Acorn Woodpeckers Herbivores? Diet. Omnivorous, eats many acorns and insects. Acorns make up about half of annual diet, and are of major importance during winter. Also feeds on insects, particularly ants. Is a woodpecker a herbivore or omnivore? Woodpecker Diet Insects and their larvae are the mainstay of the woodpecker’s diet, but they eat