Just added new chickens to my existing flock. Immediately our rooster mated with the beige hen. She then proceeded into the flock to introduce herself and 2 hens and the rooster attacked her! With 3 against one she coward down and tried to bury her head. I jumped in at this point. I thought the rooster would keep things peaceful,but instead he joined in. Should I be concerned for my new beige hen?