I only have two birds right now. I am planning to get more in the spring, but that leaves these two with only each other for warmth thru the winter. They are three months old and very fluffy and fully feathered. They have a nice, dry house with no leaks at all and only a little bit if draftiness by the top vent. I have been reading about how chickens in Minnesota and Alaska happily brave the elements and am wondering whether my two California girls are just wimpy, or whether having only two makes them work harder to stay warm. They LOVE their house and want to stay in it all day unless I lure them out with treats. They also have a large run and the ability to free range for a couple of hours every day, but they usually just go back inside and hang out. We are having a pretty sizable storm right now (by CA standards anyway). It is in the high 30s but very windy (Sacramento valley) and rainy and generally unpleasant. When I open the henhouse to check on the birds, I can hear the wind howling. They were sitting there this evening in a corner looking miserable. Do they need a ceramic heat lamp? Is the change in weather just freaking them out because they aren't used to it? We have had a couple of prior storms and they behaved the same way... Any thoughts on the idea that two birds might need some external heat source to stay warm? I don't want to coddle them, but I want them to both stay comfortable until they have a larger flock to huddle with. They both seem very healthy and chirpy and happy when the sun is shining...