shed hunters

Gathering shed antlers or "sheds" attracts dedicated practitioners who refer to it colloquially as shed hunting, bone picking or sometimes clinting. In the United States, the middle of December to the middle of February is considered shed hunting season, when deer, elk, and moose begin to shed. 

"Shed hunters become prone to disorientation, delusion, and compulsive wanderings. Otherwise it's a good choice of activity  to recommend to those who might benefit from getting lost." 

~ Alfred E. Neuman