When I decided to get chickens, a large part of my motivation was to get eggs from grass-fed animals for the health benefits that can convey to me. But, since then, I've learned as many of you have, that chickens will decimate grass. So, I make efforts to get them fresh green things, but I have a theoretical question about it for the next house I own: How much space per chicken will keep the grazed area in healthy grass? I understand that flock rotation will be really important to keeping the grass healthy, but once I move to a new place, I will have a fresh, new yard to consider, and will need to calculate a new maximum flock size from that. Resolved!: I have since found the threads I was looking for that cover this, but can't find the "delete thread" option. Also, I figure more opinions never hurt, so go ahead and answer if you feel like it, and sorry for posting something that is already so thoroughly covered. To be fair, my question is somewhat different from most of the other questions. Here's the link I found . The best answer is about halfway down page one from Davaroo. According to him, I need at least 87.5 square feet per bird, but I'm not exactly sure if this is just to keep chickens healthy, or if it's to keep grass healthy. So if anyone knows more about his, feel free to respond here.