I have a flock of 20 in a converted section of our old barn that is 10x25. It is chicken wire on 3 sides. They roost about 3 .5 feet off the ground. We are getting some early cold temperatures here in Georgia, lows in the 30s, and I wanted to know if I need to get the coops sides stapled up with tarps today? What is too cold? Or is it more wind that is dangerous? Can anyone help with some advice?