This is my first winter with chickens, and it can get pretty cold in upstate new york. It can routine below 10F or below. I have read a ton of posts on insulation/ventilation and everything else, but I still have a few questions. Before I go into my questions, let me describe my coop & run. My coop is set up facing south, with the pop door and a window on the south side. For ventilation there is a cupola with a heating vent register w/louver on each side. Where I live, it is always windy. The wind blows all the time from the west and is very very strong, especially in the winter after they cut down the corn field behind us. For the winter, I closed off the west cupola vent, closed the window, and put a tarp over the run and down the west side of the run to block the majority of the wind and snow. I have also put up a pile of straw bales as a wind block on the west side of the coop. My questions are as follows: Should I close the North & South vents because the wind can still blow in? I leave the pop door open almost all the time because we don't have any predators and the run is completely enclosed, at what temperatures do you keep your birds confined for the day? You can see there is a slight gap in the tarp, so the wind does blow over the top of the pop door.