Ok well I was just reading on another site and it said that the chickens themselves will kill the grass, but not only that-their manure will burn up the grass as well. So that would mean that even a few in a large area would probably kill the grass anyway, right? I am thinking that my husband is going to make such a big deal out of this that I don't won't to deal with it. I have wanted chickens for a long time, but I may just have to settle without. I thought he would be glad that a large section of the yard would not need constant mowing and weedeating. I read on the other site that the chickens even clean the grass up around the fence on the other side and this person didn't even have to weedeat anymore!