I have two young adult BR roosters. They leave the coop first and wait outside the door for the hens to leave the coop. When a hen comes out, first the dominate rooster mates with her than the other rooster take his turn. They don't seem to bother the hens their age,(7 mos) just the hens that are 1 year and older. It has gotten so bad that the older hens stay in the coop until I make them leave. They don't come out even to eat. I have 11 hens, 3 older pullets (7 mos), 2 young adult cockerels/roosters, 3 young pullets and 4 young cockerels. Is there anything I can do to help those poor hens?