As others have said, they adjust their food source and there patterns start to change due to the upcoming events of fall. I see only small bucks together right now and less and less deer in the fields. The acrons are dropping everywhere around me and they seem to be into them pretty thick. Also, my stand by the river is pretty loaded as the bucks are starting to use the thickets and funnels in the river bottomas they start to become more territorial. Depends on the lay of your land, but i usually find the big boys in last place I look, so I have learned to switch my thinking and start from there.