Here’s a video of my 1st version Quail tractor I built. 5 gallon bucket is the gravity fed watering system. The Quail Tractor is 5 feet long by about 3 1/2 feet wide. It can easy accommodate 30 quail. The idea is that the bottom is open so they can scratch around and eat bugs, fresh grass / weeds and fertilize the spot then you move it to fresh grass and repeat.