I have 6 silkies 2.5 months old, 6 BC Marans 4 weeks old--a solid flock. I need to move 6 Silver Penciled Rocks into the coop as I need brooder space for an upcoming hatch. The babies will be locked in coop all day--olders are outside all day and only come in coop at night. Is there a chance that the olders could kill the babies (the olders no more than 2.5 months old) I expect harassment but don't want to lose a rock. I do not wish to separate them off in coop as I have no means to do that.