I live in North Texas and a very strong cold front just came in. The temps dropped from 70 and are expected to go into the low 30's overnight. I have 13 spring chickens all laying and doing well, and 8 12 week old chicks that are incorporated in the flock and doing well, eating well, staying away from the older hens that are dominant. Will they all be ok in this cold? A heat lamp won't do any good because the wind is blowing and the coop is tight and dry, but drafty. LOL I assume they know how to huddle up together and stay warm...right?