I live in a mountain valley in Utah. We usually get spells of -20 in the winter, but can also get some hot summers. Thinking about how hot air rises, I was planning on putting windows towards the top half of the coop. I could open these in the summer to let the heat out and breezes in. Then I started wondering about putting the ventilation openings at the bottom of the coop. My idea was this would keep the warm air at the top of the coop in during winter, but still give ventilation. My question is- Would this setup really give adequate ventilation? Would it allow moisture to escape? Would it create unhealthy drafts for the chicken? Or is this a why-didn't-I-think-of-that idea? Please respond soon as I am starting my coop this Saturday. P.S. The vent openings would, of course, be above the bedding line.