I am new to the backyard chickens scene and with winter fast approaching, I figured I needed to get some information to make sure my girls are happy and healthy. Currently, I have 4 hens and a 4x4 coop. Water and feed is kept inside the coop and I give them some other food outside when I check on them so they will (hopefully) start to get used to me. The coop has an attached run that is completely enclosed with hardware cloth and a roof. I havent been closing the coop door at night because I can't afford an automatic door yet and I am not always there at the appropriate times to open and close it. I didn't think this would be an issue since the run is as predator proof as the coop. I have kept them mostly in the run except some in the evenings when I am home so they can free range a bit. The run is a little small for this many birds so we are going to expand it hopefully in the next couple months so it will be at least 8x8 ft. Coop: Now that you have an idea of my set up, here are my questions. For the coop: What do I need to do for the windows in the coop? I have two windows in the sides that have a plastic drop in cover to close them. I have heard that being too drafty is bad and that no draft is bad... so I am not sure if I should close them of leave them open. The only other opening for the coop is the door they use to go in and out. There are cracks around the door that are not air tight. Do I need to seal these some how? Any recommendations on the best way? I thought of putting a trim piece of wood around them or maybe some sort of weather stripping on the inside. I am not a real handy man, but I am learning so I am confident if someone points me in the right direction I can get it going. There are other "cracks" where the coop isnt air tight should I caulk these to seal them? For instance, where the laying boxes are connected there is a small 1/4 to 1/8 inch gap that I could probably fill in... This would also help deter some rain/snow leaking in. Do I need more or different air flow? Should I be diligent in opening and closing the coop door? Do I need any heat source out there? I don't have power to the coop but I could run an extension cord in a pinch. Would a heat lamp in the run be better? So they can stretch their legs? For the run: I thought about just putting up tarps or a shower curtain around the outsides of the run to keep it warmer and dry. Is there any reason not to do this? I was planning on leaving a little space at the top for air flow. How much should I leave? Am I missing anything on the run that would help winterize? For the chickens: At what outside temperature should I start to worry about the effect on the birds? Do I just need to feed them corn all winter? Is there a limit to how much I should feed them? Do I need to just mix it with regular feed? Sorry for asking so many questions, but I just want to make sure I cover all my bases.