There is one thing not on your list. Other humans. A well equipped hunter has a valuable rifle, likely with a scope that cost as much or more as the rifle, and a hand gun, carries a pack with survival goodies, and likely has some sort of GPS. All of these things are valuable and easily saleable. Even if the hunter is found shot by someone else, his possessions cannot be taken and the body left behind without creating suspicion. Shot accidently or not, it may be payday for someone that collects the goodies and puts the dead hunter in a shallow grave in the woods.