Alright. So we have a 7'x40' run attached to the side of our coop (DF went a little overboard) And I've been thinking about winter and what's going to happen when we get our trademark PA Mountain snow. Our run is completely enclosed with heavy duty welded wire on the side and chicken wire on top. It's got posts about every 5 feet that make an upside down U shape so everything is really attached. So I'm thinking, how would enclosing part of the run, maybe a 7'x 10' area coming directly out from the house work if I used the plastic used for greenhouses? A lot of people in this area have it on craigslist for cheap or free. If I could cover the sides, the build a little "removable wall" on the inside of the run and cover that too. That would keep the snow and wind out, it would give the chickens a place to go outside and scratch AND I'm thinking if I get some higher rated R value, it will generate quite a bit of heat inside the enclosed part that will then go into the pop door and keep the coop warm... Has anyone tried this? Or can anyone see any big problems with my idea? THanks!!!