deer eat the buds off sapplings, and depending on the trees in your area, this may be some of their favorite foods in the area. they eat the acorns when they are available, maybe crab apples here and there, some other wild fruits, herbaceous plants, blackberries. They eat whatever is available, and more than lieky there is always something available. your best bet is to sit and watch for deer in different areas and see what they are munching on.