It depends a lot on your climate. I do know that a hundred square feet per bird is the minimum anywhere for any thing to have a hope to survive for any lenght of time, and that would have to be something they don't like in an out of the way place. Last summer I rotated fencing for about fifteen birds. The enclosed area was around sixteen thousand square feet divided into three plots. Worked well while it was wet enough for a plot to recover between grazings. Once it got dry at the end of the summer they started to destroy it. So for my spot on the planet it would seem if its wet during the growing season then a thousand feet would do. Any time or place would be different.
