Our first really cold night is expected tonight. The temperatures are predicted to dip into the high 20s tonight. I originally winterized my duck coop a while ago but we had some bad storms that destroyed my work. I covered the pen area where they are fenced in and can have space to roam with plastic. The man at Lowes who sold me the plastic said it would work for my purpose. It didn't. The plastic was too thin and a bad windstorm ripped it to pieces.