Last year before I got any chickens I was looking up designs. I found one that was like a 30 ft hamster wheel tipped on its side made of PVC pipe and covered with black game bird netting. It had a small chicken lock box in the center. It was my preferred design because it was large, light, had plenty of height in case I wanted to raise pheasants, it could be moved and like 10 people could get inside and walk around to interact with the birds if they wanted too. I book marked it and now the site no longer exists. Has anyone seen this Chicken tractor? and can paste a link to it?