I'm been dreaming of adding ducks to our flock for a while now - I just keep getting stuck on the water issue. I live in Michigan, where it's winter for about 5 months out of the year. How do people in the north handle their ducks' water needs with everything freezes constantly? I can't imagine trying to thaw and refill a baby pool several times a day in the winter. Or am I missing something totally obvious here? Thanks!