There is a reason deer live in all of the lower 48 states, its because of their ability to adapt and their varied diet. Deer love nuts, fruits, and kinds of green browse. Depending on the area they might be feeding on acorns in oak flats, blackberries in berry fields, briar leaves in dense briar thickets or apples out of the local orchard. Finding a deers food source is essential to successful hunting, but that food source comes in a wide variety.