My 2 welsummer chicks are now 8+ weeks old. For a week they have spent days in a wire pet playpen adjacent to their 2 yr old RIR sister's chicken run. At night I carry them to the henhouse within the run next to sisters adapted doghouse & lock them in. They have been observing each other thru their adjacent wirey enclosures. How/when do I now integrate the 3 w/o bloodshed so all will be in chicken run? Thanks for any advice!