There was one map showing movement in October and then movement in December that showed drastically different routines from one another of the same deer. October the deer was more exposed and moved about more then in December it stuck to cover more during its travel which was beneficial to actually see a map of.
I believe that's a situation 102 pointed out with hunting different times of year, and probably has more to do with food source than hunting pressure. In October the weather is warm, acorns are dropping, and green things are turning brown. It's a time of transition on several different levels. Deer can't eat summer greens anymore so they have to search out the acorns, which means movement. And it's warm enough that they aren't going to freeze to death if their caloric intake drops.
Contrast that with December. It's now cold out and everything is dead, acorns are largely gone, and the only food source remaining is branch tip buds. Where do you find branch tip buds that a deer can reach? In thickets. Not only are they staying near their food, but also are conserving energy by not using a lot of calories to travel. Conserving that energy keeps them warm. Cruising around the woods and fields wastes a lot of calories than cannot be easily replenished that time of year.
That's my take on it, anyway. I understand it all coincides with hunting season so reasons for changes can easily be conflated, but for the majority reason, I personally think transitions of climate and food source drive deer activity more so than hunting pressure.