I've read a bunch of threads here, but maybe I am not understanding. I would like to simply get a heated water bowl f or my ducks so their water doesn't freeze, this seems a popular option. However the only ones I can find are 1.Shallow dog dishes which the ducks well just splash the water out of. Or 2. Horse buckets which are too tall/deep for them to reach. Is there something else I just haven't found? I have 2 8month old peekin ducks. I also live in the mountains of northern utah, we get down to single digits.