This is our first winter with our very small flock and I'm trying to figure out how to keep their water from freezing. Winters in Colorado can be very mild one day with temps in the 50s and highs in the single digits the next day. My husband is thinking about running an extension cord the 100 feet from the house to the coop. I'm not sure how safe this is. Right now I'm bringing the water in the garage at night and back out in the morning. Today the high was in the 20s so I had to keep running warm water outside to keep their water flowing. That's not going to work everyday. Right now we have a two gallon galvanized can for them. Any tried ideas would be great.