They have my 15 acres plus 75+ acres next door of cow pasture. there are multiple natural water sources as well as the waterers in the coop. Leghorn just matured sooner than the BRs. LH was crowing at 8 weeks and the BRs at 4.5 months are just beginning to crow. but the BRs are twice the LH size. the BRs keep a distance from one another I have noticed. No fighting, just seem disinterested. Maybe they are teaming up to drive the LH nuts trying to be everywhere at the same time. Either way, the BR has room for he and the 2 new hens to wander away from the existing flock if they choose. I'll put up some boards to roost in the run when I turn the new girls loose, just in case there are issues in the coop. It is 8lX4wX5h with 2 8 foot roosting poles.. There seem to be plenty of room on the top pole still. and one BR roo has been banished to the lower roosting pole.