In big country it pays to keep an eye on the activities of these guys (Magpies).
4 or 5 years ago, one of my partners shot a deer about 3 miles back. It was in a nasty place so he hiked out to get us to help with my llamas. They went back in while I drove to camp to get the llamas. They got back there and everything looked the same. He couldn't recognize the 'easy to find' spot where he'd left it. Then they noticed magpies and crows circling. They just followed the birdies and walked right to it. Magpies love a good gut pile.
