My little peeps started free ranging with the big girls a couple weeks after I moved them outside. They have been in an open kennel, that the big girls could always see them, so when I let them out to roam with them, it was like no big deal. Unless there is special food involved. My little peeps stick together, and all went in at night. Friday I moved them into the big girl coop, I had to add another perch so all would fit. My little peeps are 8 & 10 weeks old. They seem to all get along, unless food is involved. The little ones keep their distant, unless you bring out cheese or mealy worms, then they run in and grab what they can and run away. So much fun to watch. I went out last night to check on the little peeps (there are 7) and they were all perched on the big girls perch ( there are 4), the big girls hadn't gone in yet. The next time I checked, the little peeps were on their perch and the big gals were on theirs. Wish I could have seen how that came about!