I need some expert advice! My Thanksgiving Day hatchlings are now seven weeks old and have been out in the grow-out coop/pen for three weeks, now. The grow-out coop/pen are inside the main chicken run and so the older flock has been able to investigate the babies without being able to harm them in any way. What signs should I look for that tell me I can start letting the little ones out into the main run with the older ones (supervised, of course!) for short periods of time? I have let a couple of my gentlest hens into the grow-out pen (one at a time) while I was in there to see how they (the hens) would react to them. All advice is welcome! Thanks!