I have a flock of 8 that include 1 rooster and 4 hens that are 1.5 years old, and 3 young hens just starting to lay. They have a 10x10 dog kennel coop with a 10x28 run. That run is directed connected to a 12x7 (approx) run that is then attached to a 4x8 chicken tractor. It's basically a long run with 2 coops at the ends facing each other. The run are separated by a single fence. I have 2 new pullets that I want to add to the flock, so they are currently in the small setup. When I added pullets last time, there were 3 of them. They bonded quite nicely with each other, and still to this day, even after being with the older flock for months, prefer to go off on their own while free ranging, no matter how much the rooster tries to keep everyone together. So, with these 2 new girls, how long do I keep them separated? Is there any way to keep them from being so independent of the flock like the others?