Ihave recently got 3 golden laced cochin bantams and 1 hen has her tail feathers pulled out and the rooster has a spot like that on his chest but the other hen does not have even have 1 feather that has been plucked off of her the laddy said that hen is plucking featheres because she recently moved them from a really big cage to a REALLY small cage for a week how can i stop them from picking on the hen and rooster?