Fox squirrels are most active in the morning and late afternoon often burying nuts for winter use. They feed mainly on hickory nuts and acorns, but also eat the fruit of tulip poplar, maple tree seeds, corn bordering woods, berries, bird eggs and fungi. Gray Squirrels are active year round, but most productive in the morning and evening on dry days. Gray squirrels feed primarily on nuts, especially hickory nuts, acorns, beechnuts and walnuts. In addition, they occasionally feed on maple or tulip tree seeds, fruit, opening buds and corn. Pine Squirrels are active year round, especially in the morning and evening. However, they are sometimes active after dark as well. Pine squirrels feed on a great variety of seeds, nuts, berries, bird eggs and fungi.