Hello Everyone!! I am hoping someone would give me some advise on the ventilation of my chicken coop. My coop is 4'x4' and has an approximate ceiling height of 5' to the peak in the center. I have a 24"x18" sliding window on one side, only the bottom half opens leaving a 12"x18" opening with a screen and also hardware cloth on the inside, this window is about 4" off of the floor level. Other than that I have two 4" pod vents at the peak on both sides. The coop is kind of set back into a wooded an brushy area which is great for shade plus it does get a little sun as well pending on the time of day and what light comes through the trees, but unfortunately the wind does not go through there enough to cause good ventilation due to the brush and trees. I have four chickens in the coop with an attached run. My thought is to add an exhaust fan at the peak of the wall that is opposite of the window so basically air would get sucked in and then up and out the exhaust. My concern though is would this be creating a draft that would hurt the chickens in the winter time? The roost is approximately 3' of the floor, and being only a 4'x4' coop I think they will feel and draft coming through. Any suggestions and advise is greatly appreciated!! Thanks!!