You know, no offense to you, or anyone else. But temps to 0 or -10f, are bugger all. Try some -30 to -40, do you all think bantams are going to like this for a week or 2 straight, with day time temps to -10f. They try and survive.To heat my coop I close the door. 10 chooks in a small (well ventilated) closed coop = a very warm coop.
It really amazes Me that those who do not experience bitter cold for days on end, can really understand it.
It is 1 thing to have a night of 0f or -5f, but for a week of -30 to -40.
There are those who talk about -40, that is rare, and even rarer in a lot of areas of Canada and the USA, with the exception of Alaska and northern Canada.
I am not finger pointing, but do you think my small flock of mostly Bantams, would enjoy sitting in the coop today with it being -30 outside and maybe -10 to -15 in the coop.
I have it around 25f in the coop right now, humidity is around 50%, this tolerable.I could probably keep it a little colder, say 15-20f.
So those who have temps above o for the most part, not a huge deal, those with a lot of -30 and colder, may need a boost of heat to make it tolerable for these creatures.
Again not criticizing anyone, it just needs to be stated to all of you no heat, no insulation proponents, maybe you do not understand very bitter sustained cold temps...