I have 3 6week old Frizzles and am going to be adding them in with my 10 week old mixed batch of bantams. I have put them in the run with the older one for short periods of time and also watched them as I left them on the outside of the run. When I put them in the run I have one roo that picks on them and they run to the corner and try and hide from the older ones. My question is, are they establishing the pecking order with the newer ones? Having a hard time leaving the "babies" in with the older ones.