I would follow Wyandottes7's advice. It is not meat but feathers that keep a chicken warm and by the time it gets real cold, they should be fully feathered out. Most people skimp on ventilation. As the above post indicated, ventilation is a good thing but cold drafts are bad. The purpose of...
Welcome to BYC from one Long Islander to another!
You will find a lot of good information here. Keep on asking questions and you will get many good answers.
You may also want to read the FAQ below.