For watering this year I have 5 gallon buckets w horizontal nipples and small aquarium heaters. All but one are inside the coop and I haven't had any trouble with them freezing. I don't have heat for the goose water so they have a 5 gallon bucket that I smash the top ice & add hot water to daily. It's out of the wind which seems to help. Monday I had to bring the bucket inside to thaw & replaced it with a temporary bucket. In past years I've used the white & red waterers, rotating them inside to thaw and then tried heated bases of a couple different models. Happiest with the bucket/nipple system tho.
