Ok, I've redone the chicks pen that is attached to the coop. It measures 25.5' L by 14' W and 6' T. I think the square footage would be roughly 325 sq ft, right? Just counting the length and width? And then the coop is 12.5' L by 10' W and 8' T. So, what then is my TOTAL square footage with pen and coop? And here are my other questions: 1. How many chickens can graze comfortably in that space and for how long? Keep in mind that I plan to add several roosts, too. I need to get an idea of what my finished flock size can be, because I've got the fever! lol 2. Can they use it permenantly (I cant really move it as its attached to the coop) if I let them range the yard a few times a week when we can be outside with them? 3. Kinda off topic, but was wondering if they will need a feeder and waterer in the pen as well if the door to the coop is open for them to go back in if they need it? At this age now, when I let them out they run around and munch on grass and stuff and when they get chilled or thirsty they just go back into the coop. If they do that now, will they continue to, or do I really need outside stuff too?