Before feeding anything, check with the wildlife biologist at your local DNR office for feeds that are appropriate for your area. The enzymes in a deers' digestive system change from season to season and although they may well eat something to fill their stomachs, it may not do them any good. Regional differences in climate and naturally occuring foods will determine what they can benefit from. Also be careful when buying corn for supplemental feeding, if corn is not certified for use for animal feed, it may do more harm than good as in killing any wildlife that eats it. Turkeys are a prime example of wildlife that may be harmed by corn, there are molds that can effect even certified feeds if it is allowed to set too long or get damp and these have killed every Turkey in an area nearly over night.
Now is the time to begin thinking about mineral supplements for the Deer herd, in about six weeks you may wish to begin setting out your mineral licks to help the does with the fawn crop for this year and the bucks with antler development. Many hunters put out the minerals in August and later but that is too late to help with either antlers or healthy does and fawns.