X2Hello fellow Ontarian! The description of the hair and the fact that heads were eaten sounds like a raccoon to me. We've had the exact same things happen hear and it turned out to be raccoons, confirmed on a security camera! They were getting in where the roof met the wall, a space no bigger than 2 1/2 inches. So we blocked those openings with 2x4 and got a trap from TSC and have trapped and shot four so far. Haven't seen any in five weeks now and my I have not lost any more chickens. Secure the coop, chicken wire doesn't keep out predators if you have any on windows or opeings. Predators can squeeze through unbelievably small spaces and are very diligent about finding ways in. Now that they've found food, they'll be back. Good luck!