Well, I suppose everyone has varying ways they do things based on individual setups, experience, etc. I still consider myself kind of a rookie, so others may have other good info. We had a half dozen Rhode islands a few years ago until a weasel killed them. This year we're ready again. We bought all our chicks within the same week, except the australorps, which we got a month or so later. By then the older girls were in their finished coop. We kept the younger chicks indoors for about a week then put them in the coop with the others. I wanted them to get used to each other as quickly as possible. So we made a small cube from chicken wire with a hole for babies to get in and out, but too small for big girls. We put their crumble and water inside their cube. As they got braver they would sneak in around the big girls at the big feeder. Until one of the bigger ones would give them a peck and send them scurrying back to their cube. In a matter of a couple of weeks, they were all mingling quite nicely, we removed their little cube and haven't had any problem! They all free range together in the day and head for the coop at night. Hope this helps! Wish you well!