We have an 8X12 coop with an 10 inch ventilation strip all the way around, both windows have been closed for the winter and we have a clear fiberglass roof ( we did not get to the permanent roof this summer) We had to block off one side of the ventilation because snow was blowing in and it seems to be coming in from the west as well. We live on top of a ridge which gets the wind going in all directions. Can I block off the west side and it still be adequate ventilation? They are in an unheated coop and it seems fairly cozy in there, but snow is starting to collect in the store room. Any suggestions appreciated! p.s- what was I thinking putting the coop on the side that gets the biggest drifts???