It is illegal to do that with a real airplane, (at least where I live) I knew a family that put their brother up in the family airplane, he would circle the hunting area and radio where the deer were to his family on the ground. When Game and parks caught wind of it, they lowered the boom on this group. Its an unfair advantage to the hunter, much like shining a spotlight in an animals eyes to find and shoot it in the dark.
So I would expect legal trouble if doing it with a drone. You may want to check into that before you get the $10k fine the people I know got!