What about winter and backyard chicken coops? I live in Missouri and today is -7 degrees. What would I do with my chickens?
Wow, that's cold. If you check on backyardchickens.com, they have a breed list, it will tell you the breeds that are hardy and well suited for cold weather. During the winter we use a heat lamp, it isn't essential here in Utah, it just helps keep the egg production up because they aren't using the majority of their energy to stay warm. You can make sure that the coop isn't drafty and even insulate it. I know someone who stacks straw bales around the coop in the winter, then uses the straw for their bedding throughout the rest of the year.
If you have any other suggestions, please leave them in the comments.