Depends on what state you are in. Here in Iowa, before a deer can be moved from the site, it has to be tagged. Also, you have the right to track an animal onto other property (unarmed of course) after it has been shot. By the other guy taking the deer (if it was without a tag on it), he is poaching even if he is the land owner. Call the game warden to get the specifics for your state. Good luck.