We have insulated part of our shed so we could keep our chicken inside through the winter. I live in Canada so temps can (and will)) go down to -30 C this winter. We bought this heater thinking it will be enough, but now I'm not sure. Temp in the coop is barely above zero today with the heater and a halogen light we have going during the daylight hours. The water won't freeze since it's next to the heater. There is only one electric plug in the coop so it's not feasible to add another heater. What temperatures can chicken reasonably tolerate during winter? Also they don't roost despite several perchs installed in the coop for them, they sleep on the litter (if that makes a difference for the cold tolerance) Should I maybe replace the bulb with a brooding for more heat?