I was wondering when is was safe to let my new chickens out in the run with the older ones. The "older" ones are 6+ month silkies - 1 roo and 4 laying hens. The new ones are almost 3 months old. 4 cochin bantams (one is a roo), a polish, and a fayoumi. They have been around each other quite often. We let the little ones out in one of those dog play pens. So they are usually separated by the wire. The problem is that these little ones love to fly! They keep escaping! so we pile all this stuff on top to keep them from flying out. I would love to just let them in the run with the others. We've done some trials and they seem to all get along, but everyone says to wait till they are the same size. That could be a few more months! I was thinking of adding some higher perches in the run that they could escape to if needed - the silkies don't seem to fly around much. Thoughts?? We would still bring them in at night.