I thought this would be the best place to post this, not sure though. Is there a mathematical formula for how many free range chickens are needed to keep a certain square footage of grass "clipped" at a certain length. Something like: X/Y/B=C X= sq ft of grass Y= inches of grass height desired B= Average amount of grass a free range chicken eats C= # of chickens I know that the example formula I gave probably wouldn't work, since Pi is not in it, and nothing is squared But you get my point. Reason I ask is we noticed that our 3 week old chicks keep the grass in their 64sqft run at about 1/2 an inch tall. They are in there from about 8am until dark. The rest of the yard is about ready to be mowed and is several inches tall. We looked at it today and said cool, then scratched our heads, and said to one another at the same time, how many adult chickens do we need to keep the rest of the yard "mowed", but not dirt. So anybody have any formula?