We have 11 hens that we have had for about 1 1/2 years. We have always let them free range from about 4:00 PM until dark with no problem. This past week they have all decided to destroy my lawn. I mean tear the crap out of it in large areas. Not just one naughty girl, but all of them! Like it's their job or something! They used to occasionally dig on the edges of the yard, we have about an acre and a half for them to roam and the rest is surrounded by woodland. Now all of a sudden, this! My husband insists they stay in the run now, no more free range girls...a couple are also molting..could that have any relation to this behaviour?