Chicks that are raised together, at least in my experience, stay together. My minis were raised with our heritage turkeys from chicks and still roost with them. If one of the minis goes off too far one of the turkeys will go look for her and lead her back
That’s in the barn, LOL, they have free rein during the day. They only go into their coops for cooling in the shade if the barn is too crowded or at night. Our coops are hillbilly condo style, added onto as the flock grew. I’ll post a picture in the coop build section if you want to see it.
We got really worried on a couple of chicks, turns out they are minis , perfect little buggers, just small.
She’s about 8 months, and have another that’s barred rock.
Our newest chicks are all mixed and there is a noticeable difference in sizes at 1.5 months.
No worries, as long as they are...