My Roo is really good with the girls but he is favoring three pullets and is wearing their back feathers off during mating. I'm really not sure of what to do about it. My one roo has 8 pullets to choose from. I have seen him with each pullet. I could separate him from the girls for awhile but I hesitate to do that since he is so good to watch out for the girls. Is there something that I can do to help out the feather situation without separating them?