A whitetail buck makes it to a mature age (4.5+) by finding locations to bed during the day where he can lay undisturbed during daylight hours. These locations may offer just a few feet of visibility or may offer miles of vision to the buck.
Strong wind shift events can create a predictable hunting opportunity for a mature buck. This will usually be associated with the passage of a strong cold front, which changes the wind from a southerly to a north or northwest direction.
A mature buck will approach his preferred bedding location from the downwind direction to check for predators and the presence of other bucks before bedding for the day. In pressured hunting areas this will usually occur more than hour before first light.