I was going to run some experiments this winter since I have two buckets, one warm, one out of the horse tank with a stock heater, I've been pondering this, when I was unable to take care of my critters this past winter my husband did it and he doesn't carry warm water out like I do, he just uses trough water, I also had a rooster get frostbitten feet and eventually his whole leg, but I'm pretty sure he probably splashed or spilled more water than me and got his legs wet. I'll never know. Thanks for the heads up.just a hint try not to use warm water as best u can it freezes faster i found that out the hard way i filled my waterer one night at 630 with warm put it in walked back out a half hour later it was froze the next time i filled it with cold it didnt freeze for a couple hours
Blooie I still envy your greenhouse run, I'm sure my chickens would love it too, we have similar climate too. Bring it.