How do you keep your chickens water from freezing in the winter? Last year we used a hated dog bowl it worked great but my son (they are his chickens) didn’t keep it clean and of course the girls pooped in it which made the eggs taste bad. We have a bucket with the cup style nipples, I was thinking of putting a small fish tank heater in it this year, it will be inside the coop, instead of outside also. We often have days in the negatives here. Not all winter but sometimes a week or so at a time.