I'm probably just being a baby about this, but it's keeping me awake at night worrying. I wanted to keep the coop just above freezing, but last night it got down to 25F here in Kansas, and the coop (inside) got down to 27F. (And yes, I know that's not that cold -- I'm from Wisconsin.) I only have 3 birds and the coop is 24 sq. ft., so their body heat isn't enough to keep it above freezing. I have a heated water bowl, so their water's fine. I keep reading that I don't need to/shouldn't heat the coop, but is it REEEEEEALLY OK??