I have 23 9 week old pullets and a 1 year old roo. I have them separated until the girls reach maturity but they can still get to each other if they stick their heads through. Well, this has happened twice now (that I have seen). The Colonel (the roo) will call the girls over to the fence with a treat. Once someone sticks their head in he grabs her by the back of the neck and she screams bloody murder. This second time he took out about 6 feathers and there was a bit of blood involved. Is he trying to mate? Is he hurting them? How do I make him stop? Thanks!!!!