Omniverous. Most of diet is vegetable matter, especially in winter, including acorns, beechnuts and other nuts, many kinds of seeds grain, berries, small fruits, sometimes cultivated fruits. Eats many insectsd, especially caterpillars, beetles, grasshoppers and others. Also eats spiders snails, birds' eggs, sometimes small rodents, forgs, baby birds, carrion and others.
Forages in trees and shrubs and on the ground. Comes to feeders for seeds and suet. Pounds hard seeds or nuts with bill to break them open. Will harvest acorns and store them in holes.