I bring out warm water each morning before I go to work. I have a black rubber 8 quart pan and a gallon iced tea jug sitting in it. When I collect eggs & check on them after work/dark, there has been a smidge of liquid water in there except when it's been in the single digits or below all day. They are laying & "talking" and scratching in the run & seem to be just fine--no heat, lots of ventilation.Do you do anything to keep their water thawed. If not, how often do you get water for them?