I am looking to make a larger chicken coop out of a small, already owned grain bin. I have plans for summer weather which are relatively simple. But for winter, I don’t know how to insulate a space this large cost effectively. Hay? I have winters of up to negative 50 Celsius, and if I can’t keep them over the winter, what do I do with a medium sized flock? Any suggestions on insulation and heating options or how to get rid of a flock that size?