If you are hunting during the mule deer rut, it helps to understand some of the basic ground rules. Whereas whitetail bucks use scrapes and rubs as part of their breeding display, muleys don't make scrapes and their rubs don't have the same significance as those of whitetails. Whitetail bucks also travel extensively in search of a doe or two, while muley bucks will hang out continually with a herd of does, breeding them as they come into estrus. If you see a gang of does in a field, or moving toward one, the chances are good that there's a buck close by. He might not show his face until after dark, but there's a possibility that he might be on the heels of the does, especially if one of the bunch is in estrus or if there is a competitive buck nearby.