I’m in Louisiana & I can pretty easily inform y’all about the cups. I use the RentACoop cups (pure gravity...NO stems to peck at to release water) on the Flock Party 4-gal bucket, and I LOVE THEM! Well, I loved them until this freak weather rolled in...1-2 weeks of hard freezes, rain, snow, etc. I keep the waterer hung inside the coop. We got down to 19 degrees last night. I hung up the old heat lamp from their brooder last year, covered the bottom half of their human door with a tarp to block some wind, rain & snow, then added several more inches of clean, dry shavings to their dirt floor. When I went out this morning to open their pop door, I realized the water bucket had a layer of ice around the sides and my beloved watering cups were FROZEN SOLID...in Louisiana!!!