We recently lost two chickens to what we believe is a predator but are not sure. Both chickens (one each day) were eviscerated but were not eaten. They both survived for a while but had to be put down because their intestines had prolapsed outside their bodies. This seemed to happen between 3 and 4 PM. The coop and run are securely protected by strong metal wire on the sides and top and the bottom is secured with a chicken wire skirt buried about an inch down in frozen ground and snow. There is no sign of forced entry or tracks in the snow. The other chickens had blood on their heads. I have heard that they are attracted to blood. I'm hoping that I don't have a cannibal chicken in the flock. I started with 6 chickens and they all were raised together since they were 1 day old. Both dead chickens were of the same breed (australopes) while the remaining chickens are all different breeds. Any ideas?