Right now I have 2 temp. pens for my Turkens and Australorps. I'm letting them breed and become purebreed eggs. So far so good. My question is in the Aussi. pen there are 4 chickens, Turkens 3 in pen. Right now I have XL dog houses for them to lay in and they sleep in them too. Will this many chickens per house be WARM enough for winter? 4 and 3. I don't want them to freeze to death. I'm in IL, so winter are not terrible but not luck Florida.