In case you were wondering what a chicken tractor is, I thought I would show you.
The chickens have a yard of their own to run around in and a house at the end. There is a nesting box in the house where they lay their eggs. There is a rope on one end and wheels on the other. We move them around to different parts of the yard every few days. That way they get fresh grass to fertilize and they don't destroy the yard too much. Oh, and it keeps them safe from the dogs.