Hi I have a cabin coop design. All summer my chicken can leave the hen house into the enclose run all the want. I have their food and water and a perch in the run. I let then out of the cabin often but not everday. Iam trying to prep for winter and there area few things I am not sure of. I am in eastern mass near the cape so we get pretty good winters. I am going to put a 100W bulb in the coop on a thermal block. I think we are going to leave the food and water in the run. However, I was going to leave the doorway open so they r free to go in and out as they please. My husband built a door to enclose then in the hen house at night. He was concern the doorway was to much of a draft. I on the other hand felt that was the only ventilation they had since all the windows were closed for the winter in regards to draft risks. I also liked not having to go out every day to let then out into the enclosed run to eat and drink. Should we close them up at night completely or can I leave the door open for the winter? ( we are putting wind breaks on the coop) Can I put a flap style door that I can train them to go in and out of or a door is best? Note: I am doing deep litter method too I know I can go out every morning but I am trying to avoid everyday. during the summer I sometimes don't go out there until afternoon to check water and food. Somedays I don't have to because i have a nipple system and hopper for feed. I would love a automatic door but don't have the money for that this year. if they are closed up completely because of drafts should I open at least one small rectangular vent or they will be fine?