Nice information ,I like the comment about letting the Chickens get acclimated to the cold , the thing is to prevent wind Chill as this does not make temps colder it just makes the Object transfer the heat faster (turning to the wind slows this down) one thing I did not see or missed is the "Deep Liter Method" does anyone have comments on this Method I currently have 8 inches of pine shavings and will add another 2 inches each month as the weather drops and keep monitor the Humidity of the air and moisture of this bedding Thanks to all