Two of our hens are picking on the third hen. We've separated her, and every time we try to re-introduce her, she gets picked on. She becomes a bloody mess, mainly her comb. So we are constantly having to isolate her. Will all three ever be able to live together again? When they are free-ranging, they seem fine. The picking-on happens when they are enclosed in the coop, which is a large coop, so there is plenty of room. Our biggest fear is that she will be picked on to the point of being cannibalized. Any suggestions or ideas?