In 2003 on a sheep hunt, my buddy and I had to leave his gutted ram on the mountain overnight. It was a later season hunt in the Chugachs, so we no kidding had a few hours of darkness. Oh the memories of being camped on top of a mountain and having that feeling you can reach up and touch the Aurora. I digress....
Anyhow, the following morning my buddy and I arrive to the kill site to find the birds had beat us to him. They sure did a number picking at the cape and getting to the meat. Well, this year my buddy and I found ourselves in a similar situation where I had to leave my ram overnight. Although we were much further north this year, a combination of late hour combined with dense fog/clouds/rain we could hardly see. Rather than simply gut and leave my kill in the rocky chute. We buried the booger.
How many sheep do you see in this pic? Now how many do you see? When you have no choice but to leave your critter behind. Conceal your kill with rocks, stick, tundra sod, etc. It may not keep the bears off of it, but it should help with the birds and smaller game.