I'm building the coop for our 9 chickens (they're 3-1/2 weeks old now), and I'm stumped trying to figure out the ventilation/window plans. I'm building a 6'x6' box with a gabled roof that is 6' at the sides. The roof is going to be a sod roof, so no ridge ventilation. But what I'd planned was to stop the wall cladding 1' below the wall meets the roof and finish it with hardware cloth. So there will be 1'x6' openings at the tops of both side walls. I'm also going to use a storm door as the door, and it has a window that can slide open for more ventilation (I was thinking summer). So my question is whether I need to put a window in the back wall, which I could board up during the winter to prevent drafts, or if I could just do the same thing as the side walls (leave a 1' space open at the top of the wall). The thing about the window is that it seems like it would provide better air flow during the summer, when I would have the window in the storm door open also, but I'd have to worry about rain getting in (not worried about the storm door since there will be a big awning over it). I'm going to use the deep litter method, so I really don't want it getting soggy, and also I don't want water to drip down the wall on the inside and then cause rot (that sod roof is heavy!). I'm not crazy about rushing out and closing the coop window every time rain threatens (pretty much every day in the summer), and I don't really want a plastic sheet hanging down from the eaves (trying to make the coop look attractive since it's close to our house). Also, I'm not sure how drafty it would be in the winter (I was planning just to use a hardware cloth screen and close it up with shutters in the winter). But I don't know if having a foot of ventilation on the tops of the walls would be enough. I could do the same thing on the front wall, so essentially there would be a 1' gap between the wall cladding and the roof all around the coop. Is that enough ventilation if there's nothing lower? I'm worried about not having enough ventilation in the summer (our summers are super humid here in central Illinois), but I'm also worried about drafts in the winter (I know ventilation is important then too, but it's dryer in the winter than the summer). Thoughts?