My hens are exactly 1 year old. I had too many roosters, and they had gotten bare spots on their backs. I removed all but two Roos (I have 35 hens or so) and put breeding saddles/aprons to let their feathers heal up. A month later, I removed another Roo leaving only one roo. Now another month later the hens still all have massive bare spots. I since have removed the saddles, thinking maybe they were the problem. What can I do? They haven't started pecking on each-other yet but I'm afraid they will. What can I do to help speed it up? What might have prolonged the regrowth?