We are designing our coop. We have an old, grungy building at the back part of our fenced yard area. We are talking about cleaning out one of the corner rooms in that building (shack!!) and converting it to a coop with an attached yard (they will be let out to range when we are home, but confined to their yard when we are at work). I think the room is about 8 x 16, which is VERY roomy for my 9 regular chicks and one bantam (gee, I think it actually leaves me room for an addition or two!). Anyways, I had in my mind a stand alone building with plenty of ventilation, windows on all the walls, etc. Now, I will only have two exterior walls. I am trying to picture how we will get enough ventilation and cross breeze with only two exterior walls. I am allowed to do windows and a people door and obviously a pop-door, and hubby says we can do roof vents. Do you think the two exterior walls and roof vents will be enough area for ventilation?? Any one else with a coop that has only two exposed walls? I may be able to put a screen door on the far opposite exterior wall, but not sure if that is an option yet and not sure it would do any good for the coop area as it would be at least 15 feet away. If I am REALLY convinced it won't work, I think I can convince hubby we need to go with the stand alone building, but this would save a TON of money (that I could use for niceties like a roof-covered area of chicken yard, etc), not to mention time and work, and with hubby starting to work 5 10 hr days plus 8 on Saturday, time will be in short supply! Thx!!!