So I am pretty new to having chickens, although I saw my grandfather do it for the whole time I was growing up. My coop is 8 feet by 8 feet by 8 feet. It was on the property when we bought it. We reconditioned it - its a nice building. Totally predator proofed. Its got 10 laying boxes in it, windows that open with the inside covered with hardware cloth. The run needed the most work - alot of it was rotted out. we replaced the wood underground with weatherproofed wood and rebuilt the coop with 2 foot spaced 2x4s. A little overkill, I know but I'm very worried about predators. We used hardware cloth, the kind with the tiny squares. We covered the roof and all walls, including the door. Under the ground, we ran thick plastic fencing material with the same 1/2" squares on it. Then covered the ground fencing with sand. Here's the thing. I have 27 chickens (ordered from mcmurray, they only offered 25 lots). We have the coop and the run which are both 8 x 8 x 8, so total we have 16 x 16 x 16 of space for them. Whenever I let them out in the run they go nuts like they love the exercise. I was thinking about leaving them out in the run, which I think is completeld predator proof, while I am at work (8am to 5pm). That way they get more exercise. What does everyone think?