So here we are, a good portion of the way finished with the coop. Next time hubby is home, we'll put in a window, finish up the front of the run with hardware cloth, build the nesting box and put in the roost. I got several helpful responses earlier about ventilation. So here are pics and more questions: You can see the top of the coop (roofline) in one pic that we've enclosed in hardware cloth. There will be a wood cut-out to plop in there for wintertime to keep it warmer. The window will obviously be closed for wintertime. That said... one still needs ventilation in the winter. You can see a photo of the area between the coop wall and the roof. There's a one inch space all around. It's not totally open, because of overhang from the plastic roofing. My questions are: is that enough ventilation for winter nights? (Their door will be open during the day.) And two: is it safe? There's no wire up there -- DH said it was impossible. Sorry this post is so long. I'm obsessing.