I'm thinking about raising meat birds which I've never done before. I like the idea of a chicken tractor as a way to help reduce feed costs. Other than that, I see no value in a chicken tractor versus a permanent coop. Is the amount of feed saved by using a chicken tractor significant or only minimal? We have bald eagles, red tail hawks, fox, possum and coyotes in the area. I can build a heavy chicken tractor that I move by pulling with the ATV and that would eliminate any possibility of a coyote lifting the tractor and getting in. But I don't see any real way to deal with predators dig there way inside. Is it practical to have a wire floor in a chicken tractor or would that make it impossible for the chickens to get at the grass? Just thinking about the pro's and cons of my options.