I keep my chickens in large fenced-in areas. This year I plan to divide the sections in half and plant various greens on one side and then the other, -for a rotational grazing of sorts.
Just recently, I was letting my flocks free-range, since the garden is empty. They did not cross the road, but they decided to eat the house. We had a basement put in a couple years ago, and the area between the house and the ground (it used to be on posts) is bright blue foam board insulation. I painted it gray to look like stone. Now, there is a bright blue line all along the ground, as well as several bright blue spots up higher.
Unless we figure out a way to protect the house, the chickens will be restricted to their grazing areas from now on. A few were flying over the permanent fence, so DH added another three feet on top using deer fence, just in the frequent flyer areas. So far, it hasn't occurred to them to fly over in a different area.