I think one of my roosters is injuring my hens possibly while mating? I came home from work last night to my second hen this week with her back feathers missing and sores on her back. She was standing in the nesting box like she was in shock. The first one has a hole in her back and I think her leg may be broke. My son loves this rooster so I don't know what to do? Is this abnormal behavior? Is it the time of year? We have 6 hens and 4 roosters in one flock. We have had them less than a year but they have all gotten along well until now. Any advice??