Also, one of the best things you can do to make sure your flock is safe is to consider the size of your coop relative to your flock. While a smaller coop will be warmer, if it is too small, you invite problems with pecking. This intensifies if your flock is reluctant to venture outside in the...
We had similar temperatures in Wyoming, but likely lower humidity and fiercer winds. We did not use supplementary heat except on very rare occasions. We had weeks on end with daytime highs below zero. We did use an incandescent bulb in the early mornings to increase daylight hours to promote...