We have a flock of 6 adult hens that includes 4 black sex links and 2 barred rocks that we started when our daughter was an 11th grade FFA member. Our "big girls" are in their 3rd summer now and they are still very productive. We have a large, 2x4 constructed coop in our backyard that is insulated just like an Iowa house with an attached and completely caged in "yard". This spring I started adding to our flock and acquired a small A-frame coop made of metal roofing, chicken wire and wood. It is a perfect in-between coop for our little chickens to get out of the brooder and outside whole letting them grow big enough to hold their own with the big girls. I love these sweet birds. My daughter went away to college, but I'm hooked on her "project".