During a cold snap several years ago, night temperatures up on our hill on the west side of Canadarago Lake were hovering around 22 below zero. Worried about my chickens freezing their gizzards off, I hung a 100-watt bulb on a wire in our small coop inside the barn and let it burn 24 hours a day.
I’m sure it raised the temperature a bit, but it also increased egg production. In fact, after a few days of continuous light, my chickens started laying eggs like crazy. Concerned that they might burn themselves out, I consulted neighbor Jim McNulty, who had attended Cornell University and now lived at the foot of nearby Panther Mountain. He agreed the hens could become exhausted, but warned that if I suddenly cut off the light, I could drive my chickens into a molt, which was bound to kill them in this cold weather. At the same time, to keep the water in the coop from freezing, I installed a heater in the water bucket. Between the light and the heater, I was worried about causing a fire.
Again, McNulty advised me to do away with the water heater and put snow in the bucket, which would quench the chickens’ thirst and wouldn’t freeze like water. I was impressed. He also informed me chickens in a draft-free coop didn’t need the 100-watt bulb. Removing it was no small step because beloved Pee Wee, a chick I had saved by performing a virtual Caesarian on an egg in water, was among the flock I was about to pull the plug on.