Last year I had frozen waddles on my big boy, a Rhode Island White (at least that is what the guy told me & definitely a guy, by Grantsburg WI, not to get anything from). This year, my son made me a waterer with the nipples & a 5 gal bucket, if I need to keep it from freezing I can drop a bucket heater in it. This year I also disconnected the heater that they (hubby & contractor) put in; it doesn't have a shut off, just a thermostat. Of course, they told me that the girls didn't need any windows, but because I "squawked" loudly, I got 1 small window facing north. I have to have a light on even in summer so the girls know to wake up.they did add 2 vents at ceiling level. Last year I put 2 straw bales in the coop to add an extra level & more mass. I tried deep litter last year, but hate the smell after about a month. I figure I must be doing something wrong.