To agree I believe they do, not to a point where you can get within bow range on the ground, but definitely a little less alert if they can't exactly see you. I live dead center of my hunting land. We are out all summer long, swimming, kids on the trampoline, etc. The deer sense us all year long. I can walk into one of the wood lots and mostly as long as I keep my distance, greater then 100 yards or so, they will tolerate me. Probably only a hand full will have this behavior due to the fact that they spend a great deal of their time on the property. In season, I feel I can get away with a little more than most people due to closeness of our daily routine. I don't think my scent alarms them nearly as bad as seeing me. Now, mid-november even if I was covered in corn they wont tolerate anyone. Something about having a few of their close friends getting hit with flying sticks that just makes them more leary.

Kelly