At what age are the chicks ready to free range? I'd love to let our roosters (3 months old) and older hens (about 1.5 months old) out to roam but I'm afraid they won't come back. I am just getting them into their coop, should I let them get comfortable in it before letting them out free or will they just know when to come back by instinct? We have about 2 acres of grass surrounded by woods so there are wild animals around and we've seen fisher cats, fox, raccoons, and hawks circling our property.