My friend has raised them here in Massachusetts. They did okay in her unheated coop, I guess. The hens never laid much, but I think this breed is reputed to be poor layers even with supplemental heat and light. The roosters do get frostbite to the comb, however, in cold climates without supplemental heat. Frostbite is painful, and the stress of it causes reduced fertility in males. So if I were you, I would either heat the coop, or find a breed with rose, pea, or walnut comb, and a reputation for cold hardiness.