I have two bantam silver pencilled Plymouth Rock roosters. They grew up together from chicks and were never introduced to any hens. We built a separate coop and fence for them and put them in it together. They were next to hens and other roosters, but they still got along just fine. Eventually, one of the roosters got nearly beat to death after picking a fighting with another one through the fence. I removed him for a week and put him alone in a coop. When he was healed, I tried to put him back in the coop with his brother, and they fought intensely. I still can't get them to be friends again. Any suggestions would be greatly appreciated!