I have 20 hens and one rooster. 8x8x6 coop and 24x12x6 attached run. The past few weeks have been extremely cold and they tend to come out to eat and then huddle back in the coop. They have been beating each other up something awful. Almost all of them have bloody wings or tails. I've sprayed them all with blu-kote and keep diligent with the spray so that they don't get worse, but some don't care that their neighbor is purple and just peck and peck at them. I can't let them free range - we have a predator problem at the moment. Any ideas for dealing for with this?