Thoughts on Uncle Bill
Okay, first of all, Bill was a jerk. He treated his nephew meanly, and him refusing to open the door when someone outside was injured earned him my undying dislike. Now that we're past that....
Did anyone notice, when the three poachers are in the woods in the beginning and the one guy (the one with the glasses) is all jumpy and is generally being unreliable, and the white-haired guy says the "should've brought Bill along," only to be reminded by the "Huzzah!" guy that he now works with the rangers.
Is it possible that Uncle Bill is the same Bill they were talking about? There's ample evidence, because he knows where the ranger station is, AND when he and the other guy find the dead poacher, Bill recognizes him.