My husband and I (well, mostly my husband...) started building our coop today. So far we only have 5 chicks, but I'm hoping to expand our flock to both laying and meat birds. The coop is going to be 4x12 and the run is 16x12. We're kind of going by the seat of our pants, but my husband has built other stuff so he has some idea of what he's doing, carpentry-wise. I'm a little worried about the finer details though... Like ventilation. He wants to put a corrugated plastic roof on and figures that the gaps between the top of the plywood walls and the bottoms of the corrugation will suffice. But will it? Is there something else that we should add someplace else? I don't want to freeze my birds out in the winter (we are in Southeastern PA... It can get pretty cold in the winter) but I also don't want to suffocate them in the summer. Also, does it matter how close the roosts are to the nest boxes? My husband figures on putting the roosts at one end and the nest boxes at the other, so they'd be about 10 feet away from each other. I just worry that if they are too far apart that the birds will get lazy and lay their eggs in the pine shavings underneath. I'm sure that I will come up with some other questions between now and finishing, but that's good for now. Thanks in advance!