We are new to having chickens this year, and BYC has been a great information resource in figuring out how to manage our flock. Many of the forum topics relating to cold, light, ventilation, health, general flock management, etc. refer to subarctic climates as extreme outliers with a different set of assumptions. This is true. I am starting this thread with the hope that it will be a place for those of us in these truly extreme climates to exchange information and knowledge without having to explain all of the assumptions about the challenging environment we are dealing with. I will start with a question that I am hesitant to ask in the existing "cold" threads. There is some amount of frost in our coop, mainly right around the air inlet, on the windows, and some on the walls where the framing is conducting the cold. The air smells fresh and I can feel good air transfer going on. Do any of you other subarctic chicken folks have frost-free coops? If so, we would be grateful to learn how you manage your coop.