I've got a pretty large run here and my 30 some girls and their rooster have made it completely bare. I think the biggest problem was after all the snow melted what started to grow didn't have a chance. The bushes, small trees and the blackberry bushes are starting to come back but they get "trimmed" a lot by the girls.
I don't think you're ever going to have a run that has nice grass in it.
I don't think you're ever going to have a run that has nice grass in it.