I am getting 15 chicks from McMurray Hatchery. (I split the order with a friend) When I move them into my new flock, do I need to isolate or just watch to see how the behave with each other? And, say I got a new full grown pullet, how long would I need to isolate her, and how do I isolate her? How big of a space do I need to isolate her? Thanks you guys!