Getting used to the new format......not working so well on iPhone App. Anyway, heres some background. We live in Rochester, NY. Summers 80-90f+ and winters 0-32f with some brutal days of sub-zero windchills. We have 10 chickens, dual purpose breeds (Barred Rocks, Buffs, Wyandottes, Americaunas and a Speckled Sussex) they're still inside in a huge 5'x6 brooder nearing 8 weeks, running out of time and they need to get outside asap. Nights are still in the 40's too though. Our coop is 8x12 with a 6/12 gable roof still in construction. We have 6 20"x30" windows (2 on front and back and 1 on each side) allowing ventilation on all sides and control depending on weather direction (they are placed high enough so that their roosts will be lower than the windows to avoid drafts in winter. We are planning on doing a 12"x14" gable vent on each peak side. My thoughts with the coop are to look like a mini house and for the cleanliness of the look, plan to finish the interior walls and trim. With that in mind I battle myself on wether to insulate or not. Ive read the threads on here for yay and nay but still has not really helped me. I worry about their health and comfort in all seasons. My biggest questions would be is what I have currently for ventilation enough?(still at a point to add more) and do I insulate behind those finished walls to keep the heat out in the summer and some heat in the winter. I will believing windows open in winter to an extent and get that most likely defeats the purpose of insulating. Thanks in advance if your still reading this and can offer some help!