I have been watching "Polyface Farm" with Joel Salatin. The chicken tractor just does not seem practical... at all. First of all, very few people actually own this perfect land that Joel is working with. Second of all, his ideas sound great on paper... but when put into practical work, it wouldn't really work at all. The "Chicken Tractor" requires you to pull it every 3 days... gas, and labor expese. The "Chicken Tractor" requires you to "train the chickens" to not roost under the tractor at night. The "Chicken Tractor" requires a movable electric fence that has to be taken down and set up every three days. There will be no protection against hawks, eagles, or really even jumping dogs. This set up is only good for the summer months, requireing you to have two chicken coops, of relatively equal size... Sorry, but this is all enthusiasm, with no practical sense.