Moving new pullets into established coop?

[aart]

For the parallel bars, how far apart should they be spaced? 1 foot?

12" from walls, and at least 12" apart-farther if possible, out of pecking reach.

You’re right - while out to forage they act like two flocks that often cross paths with no issue. The littles give deference to the bigs at the feeders and waterers. Occasionally there’s a chase but it’s always brief. The only time the bigs seem to really go after them is if they happen to be in the run at the same time.

That's because the subordinates can get away when ranging, a confined space changes that.....plus it's a territory thing. Pullets won't enter main pecking order until they are laying or very near to it.