Well, we just got a new Barred Rock hen to introduce to our flock. The rooster is very curious, but the new girl isn't having it. She tried to jump him and fight with him, so one of our other hens came over and in turn tried to jump her. She is now in a seperate little wire pen, but every time the rooster approaches to flirt with her, she jumps at the wire and raises her neck feathers, trying to peck him. He's being very sweet and trying to woo her with his one-wing dance, but she is not having it. Should I leave her in the little pen today and see what happens? Is this common when introducing a new hen for her to be so aggressive?