My family and I really enjoy the second deer season – shed hunting season! Shed hunting is about as fun as deer hunting – except that it doesn’t provide wonderful, natural venison for the freezer…darn. Bucks shed their antlers when their testosterone level drops below a certain threshold.  The annual testosterone cycle is relatively simple. It’s below the “antler threshold” all summer while the antlers are growing and covered with velvet. The shortening day length triggers an increase in testosterone level which triggers the hardening of antlers and shedding of velvet. Read More At Winchester.com