So.... this inspired me.... I just finished adding my advice on waterfowl water in the winter to my cold weather article.
Thanks for the push.
If you have questions please ask.
Many years ago I had a heat lamp in the coop. I walked out to the coop, walked in, and the cold gust of air that accompanied me busted the heat lamp.
Shards of hot glass shattered into the bedding.
Soooo.... I am anti-heat lamps.
If you need or not heat, depends on how cold it gets where...