This will be my girls first winter outdoors, they will be one years old in December. We live in MO and I"m trying to get an idea what I need to do to be prepared for winter. Our coop is is really for roosting/nesting... there is plenty room to roam, however my chickens are free ranging all day long and have been ever since I put them outdoors in March/April. I need to know: 1. Are my chickens going to continue to free range during the day (outside of the coop) or will they want to stay in the coop all day? I don't close the coop at night or during the day, the "door" is left open all day/night... they go in and out as they please. 2. Is it going to hurt them if I continue to keep the coop open for them to free range during the day? (Will they freeze if they choose to stay outside during the day?) 3. Do I have to provide heat for them? As long as I keep fresh water/food... do they need heat? 4. My coop is made from plywood type wood with a tarp over the top with a well ventilated window at the top- do I need to do anything else to keep it warmer inside? Thanks for all who take the time to answer my questions! It's really appreciated when experienced chicken folks answer all of the newbies!