We lost 3 chickens last night and I'm trying to determine the predator so I can stop the problem. I had 6 chicks that are about 6 weeks old and I'm integrating them with the 10 week old chickens I have. The older ones sleep on the roost in the coop and the 6 younger ones were in a very large wire crate in the coop for the integration process. This morning 3 of the younger ones were pulled to one corner of the kennel and dead. Their heads were eaten and that's it. Our neighbor with chickens has had problems with opposums but we have also had rats around the barn this year, but we haven't seen any lately. I secured the coop better and putt the little guys in the nesting box tonight hoping they are safer there. Any ideas?