We are just finishing up on our 1st chicken tractor. It is so heavy that we have to use our Ford truck to push it. The top measurements are 8' x 6' x 4'. The bottom is 12' x 6' x 2'. The roof has shingles. It took alot of hard work and money but we are happy with it. We have 8 hens ( 2 Red Stars, 3 Silver laced Wyndottes, 2 Golden laced Wyndottes, 1 Brown leghorn) and 2 Roosters (both Brown leghorns). They all seem so happy.