I have a 5x3 coop with 8x6 run (plus area under coop). Constructed with 3/4 inch cedar siding (no insulation). I have six hens (1 Bl. Australorp, 2 EE's, 1 Cuckoo Maran, and 2 Standard Silver Laced Cochins) who free range an acre at least 4 hours a day (often 6-8). This will be my first Wisconsin winter with my hens (temps can get 20 below zero with wind chill) I keep about 4-5" of pine shavings in the coop (cleaned out weekly), and move the coop every 5-7 days for fresh grass. (Pics taken during construction) My plans for winter are as follows: Move the coop next to the North side of the house (South side is the front street and I am not legal Electric water heater base Tarp over the run during heavy snow fall I have plexi-glass inserts for the side doors (I will probably caulk the exterior edge of plexi-glass insert) Increase amount of cedar shavings My questions are: 1. Do I add a heat lamp . . . I have read mixed reviews on this. Some saying it can compromise their feathering out, and cause problems if there is an electric outage. 2. Would it be better to leave the coop in a sunny location, than to try to block wind on a North side of the house? 3. Do I leave the prop door and back ventilation open during the winter nights (drafts vs. ventilation) 4. Do I add anything to their diet to help them during cold spells? Finally . . . when do I begin this routine? It is already getting in the 40's at night here! Any and all suggestions would be appreciated! I know this is a lot to cover.