I am new to the chicken world. I have 15 hens. They currently have access to a building where the roosting pole is and then I have built them a small lot that is attached to the building where they can go in and out as they please. This lot is totally enclosed with wire to keep them safe from predators. My question is, should I let them out of the lot? Would they come back on their own? Is there a big difference between free range chickens and non free range chickens? Any help would be greatly appreciated. Thanks in advance!!!