I have 3 week old Barred Rocks and 4 (maybe 5) are roosters. There is definitely 1 bully in the group. I watch him jump on the others pretty often. Today I came home from work and one the the other roos had a bloody beak, just under his comb? Do I need to do anything too it. He is behaving fine, and it looks superficial. They have a big run and a lot of shade. Is there anything else I can do to keep them from beating up on each other until they are old enough to process or give away?