Here's a shot of our chicken coop, lovingly designed and made by my husband and my oldest son. My son used the whole project for a Boy Scout merit badge.
The girls are very cold hardy. My son researched the breeds and the Ameraucana chickens are good ones for cold winters like we get here in Northeast Ohio. Some days we find them in a "chicken dogpile" as my husband calls it. All six of them bundled together against the
cold.
I highly recommend the backyard chicken experiment. It's been fun for our whole family. And, by spring we should be getting 5 eggs a day! That is, if the slacker ever gets moving...