In most parts of North America, the older, fully mature Whitetail bucks have already dropped this year's antlers. Of course, the younger bucks will retain theirs for several more weeks.
Bucks in the southernmost portions of their range will also retain theirs for a couple more months, but for those in the heart of their range, the biggest sheds are out there to be searched for and found!
If you're going to pick one up and bring it home with you, just make sure it's legal to do so in your area.