I am a first time mom. My girls are 9 weeks old, so I brought home a 4 month old Roo. We left him caged, and put inside the coop at night still caged, let him loose in the morning. I watched closely, things were ok for 2 days. Wed my husband caught him beating up one of my W/leghorns. I wasn't surpised as she was one of the "boss ladies". There was little injury. Today I looked out the window and saw my Buff orp, a cloud of feathers and the roo dashing out the side coop door. I ran to window pounding and screaming to see him corner her in the run and proceed to stomp and peck her. I ran for the door and as I scramble for the latch on the run he is repeatedly winding up to stomp and peck her, one foot on her at all times. IT WAS HORRIFIC!! LIKE SLOOOWW MOTION! I had to kick him off! I scooped her up and brought her in the house. She was bleeding on the head, turned out minor. But her back/shoulder/wing area was an open wound! It is where the loose skin area is that allows the wing its range of motion.There was little blood to speak of but I can see the muscle. I found a chunk of feathers w/skin that was ripped out. I am unsure what to do for her? The nasty roo landed himself in solitary not sure what to do with him yet!! ADVICE PLEASE!!