Hi there, in a couple of days we will have the coldest day in my lifetime (35 years). Temperatures are expected to drop in southeast Texas (border) 21 F. My hens and roo have a coop but I don’t know if I need to take extra precautions. Please any advice from northern folks that are used to this temperature, we aren’t used to this weather, some of my Christmas had been in the 90s F. Any tips will help; by the way I have 5 red Rhode Island beauties, a Delaware doll, and a handsome Andalusian.