So we live in Northern Alberta, it's average -15°C to -20°c during winter, can get down to -40°C occasionally (not so much anymore... winters have been much warmer lately. We have only had one -30°c day this year.) The coop is 6'x8' ,7' tall at the front, 6' tall at the back. At the top of each wall we have 9-12" ventilation, that you can close... Along with a 2" window that tapers back to 1" tall, on each side. I will be insulating the roof for sure. We have 2 types of insulation. The rollout shiny bubblewrap type, and the styrofoam sheet type. Is it worth it to insulate and if so do I need to cover it, or if I paint the whole interior will they not peck at it? I have electricity out there, and will have cold hardy breeds that are fairly big.