So i am having a problem with my rooster who is just over 5 months who is only mating with two of my hens. He doesn't hurt one of them when he mates with her but when he does with my leghorn he is ripping up her comb. I noticed she has some scrapes on it before but there was no blood so i didn't make anything of it. But tonight when i was locking up my chickens for the night i believe he mated with her around on the corner of the coop cause i could hear her squack. I noticed she had blood on her coming from her comb. So i started to clean it with warm water and noticed he had cut one of the peak parts of the comb and he is also ripping off the comb from the scalp. Is there something i can do so he doesn't keep hurting her. I dont want to get ride of him because he is so nice but i cant have him ripping up my girls. please help me out.