I have attached a few pictures of our chicken tractor. We got the design idea from one of your back issues. My husband did a little modifying to it. It has served us for two full seasons already and is very easy to clean and to move around. 

The first picture is from April 2007 when we got our first chickens and the tractor was just finished. As you can see, our dog was mesmerized by the chickens at first.

During the winter we moved the tractor to a sheltered spot next to my husband's shop (former milkhouse), protected by the barn. Our concerns were what to do during the coldest temps and when the wind was blowing. My husband built a walkway that goes from the tractor into his workshop. He then built two boxes that hold nest boxes in one and their water and food in the other. They are connected by a tunnel. 

The boxes are built up high enough so that they are out of my husbands way when he is in the shop working, while allowing the chickens to get out of the wind and cold.

We can either block them from going outside, when it is really cold (like today -10°F with 25 mph winds), or we can open the walkway up and the birds can go in and out at will.

When spring returns, we disconnect everything and put a piece of plexiglass over the tunnel opening and the chickens are back out in the field!

I love your magazine and have gotten many ideas and helpful advice from it.