Hi,
I feel your pain, as I've had things stolen as well. I don't mean to throw salt in the wound, but it wasn't legal to leave personal property on the tree on state land anyway. His property may not have been stolen, but "confiscated" by the local warden or ranger. I know that several times per year here in central Wisconsin, they go to the woods for the purpose of removing illegally left tree stands. He's kind of in a catch 22, because if he calls the warden and he has the cam, he risks receiving a citation, which would probably cost more than the value of the cam.