I have a makeshift, pretty primitive, wooden A Frame coop that I've been using for my flock of four. Here in New England, it's been pretty cold- about 19 degrees tonight! Every day I open the roof of the coop and prop it open, letting the chickens out. I found a frozen egg this morning! I'm worried about them. Is it too cold? My father is trying to finish the bigger, insulated coop in the next week or so. We have a water heater we keep outside for during the day. I'm just wondering if there is anything I can do to keep them warmer? Should I leave the roof shut during the day? Should I put Vaseline on combs? Are they going to be okay in this freezing weather at night? They sort of huddle in the corner, my rooster usually covering the girls with his feathers. Also, if you have any tips on how to transfer my huge rooster and his hens over to the new coop, that would be greatly appreciated. I have a super skittish, runaway hen that I'm nervous about escaping during the move as well. Thanks!