I built the red and white chicken coop on the home page of BYC which has an upper loft. I live in Texas and we are already having some hot nights. I've been enclosing them in the "Chick loft" every night but it is so hot and stuffy. I have made every precaution to keep predators out. Can I keep the loft door open at night or should I enclose them every night? I did put three airholes in the top of the loft which are covered with wire but it seems like it could be stuffy for themwith the doors closed. These are my first chickens and would appreciate input. I only have two due to city code. Thanks.