Just to put this in context, I have kept chickens on and off since I was a child and have had several roosters. Currently I have 15 chickens, 2 bantams and one 8 month old Easter Egger Roo. They have a large pen and spend much of their day freeranging in our huge backyard. For the past month The ROO has been getting pretty fiesty with the ladies, and just recently he has taken a particular like or dislike to one small bantam. She is in the middle to top of the pecking order. Despite being the smallest hen I have she is good at sticking up for herself. The ROO has been aggressively chasing her around and I thought he was just trying to mate her, but then she started not wanting to return to the coop at night, and then I noticed her whole comb has been ripped off. Since then I have separated the roo from the flock, and the bantam has started roosting with the others again. I am just wondering whether I dare put them all together again or whether The ROO has to go. He is not aggressive to me or others, and his friskiness with the other chickens seems normal. I have not encountered this problem before. The poor little bantam looks so sad without her big red comb.