At night my birds stay in a fenced area about the size of a small city back yard, but during the day most of them go over the fence and make use of the rest of property. My wife's friend has chickens too, that are always in a chicken run. She told my wife we don't dare to advertise the eggs as free range because they have a fence around them, but the fence is only 4' high and only the oldest 4 stay inside it. Is it wrong for me to advertise the eggs as free range just because 4 birds don't leave the fenced area, even though they easily could?