Here's a picture of ours. We are in Charlotte, NC and the summers are HOT and HUMID, our winters are pretty mild. The "coop" part of it is cedar fencing that has dried with small gaps helping with ventilation. The top rafters are also open. You can see inside pictures on my BYC page. This is our first summer with it and so far it's working great - we'll see how winter goes. I'm planning on winterizing it somehow just not sure exactly how yet. Hope this helps.