I am so sorry to hear it. I have not had any trouble since I moved mine to a larger space. I think mine were pecking each other because they were stressed at being so closely confined. I do hope you have better success with the new hens.We had her separated or inside for over a week this second time. Her wound had healed over and was almost fleshy. We'd applied blue Kote to aid in healing. Before allowing her back out we reapplied to make sure any pink flesh left didn't show. We reintegrated at night. By morning she was a bloody mess. We've decided to remove her and our oldest hen who's been the biggest pecker and isnt laying anyways from the flock and replace them with some young black copper Marans. It sucks but it has to be done.