So the DW and I have a 2yr old RIR that didn't get picked off by a fox (our other two did). We just got our shipment of 15 Barred Rock chicks yesterday. So we got sometime (thankfully so I can finish the new coop), but how should I merge her into the new flock once they move out of the brooder? Should she move in first or the younger gals? Will there be problems? Please, any suggestions or insight will be greatly appreciated!