I'm thinking of increasing my flock quite a lot. Right now i use a 12 x 12 coop inside the barn and a 8 x 12 run out side for 28 Birds. Their happy and no problem. I live in an Urban area were running loose wouldn't work. Neighbors all have gardens. LOL! Trouble with the 8 x 10 is I have to cut grass , weeds and other things for the run. As they turn it to dirt quickly. So my question is, how many sq. feet is required to let the chickens run and not destroy the grass? So it would keep renewing itsself. Simply a confined free range LOL!