Overall, we are very happy with our winter coop solution. It gets cold in there, but we haven't lost any hens yet and have not added any additional heating. It warms up during the day (earlier today it was at 43 degrees) and then cools off at night. They don't go in the run much anymore so we have moved their food and water into the coop. There is generally no odor, and if there is, we add more litter and it improves right away. The extra carbon from the wood shavings and straw help to mediate the odor. We lose a few eggs to freezing, but "Mama" is our savior there as she is often keeping them warm for us until we collect them. We can't complain, as we are getting 10-15 eggs a day still from 26 hens in the middle of winter--with no supplemental heat or lighting. Not too shabby!.
If you are interested in eggs, just give us a call or contact us via email. We sell our "beyond-organic" eggs for $4 a dozen and if you prebuy five dozen ($20) we'll throw in an extra half dozen or so. If you do this, just let us know when you want some and we'll get them ready for you.