I hunt SE Al. and So. Cen. Ark. Here we look for acorn crop, often referred to as "mast". Deer will look for about any variety of acorn. Their favorites around here are the milder acorns which all have a pale colored meat. Such as White Oaks, All Nut (sp?), Chestnut Oak, Post Oak and Live Oaks. They also will hit the Water Oaks, Scarlet oaks and Over Cups pretty hard as well, though the acorn is a good bit more bitter. Where I hunt, usually the Red Oaks are last to drop. Deer seem to prefer them the least. But I have killed a many a deer feeding under Red Oaks late into the season.

Keep a good eye on the crop as fall approaches. It is a fact that not every oak tree will produce every year. So finding which ones set acorns in the spring is vital.
When the season is close, scout for mast using binos if necessary.

If you are not familiar with how to identify the various species of oaks in your area, I am certain you can find free-bee info at the US Ag. extension agent office or maybe from the WGF department of Kentucky.