A real meat bird cornish, is not going to free range well. For a couple weeks if you are lucky they might scratch around, but even that's not likely. You figure you keep them in a brooder for 3-4 weeks, by the time they come out of that they are probably at least 3-4 lbs,and laziness sets in soon after. If you want a meat bird that will free range a lot, you can buy the more expensive freedom ranger. I have always been curious on them, but hear how much people lose on them as far as feeding longer, and their feed ratio is between 4-6 lbs of feed to 1 lb of meat. Supposedly a good cornish meat bird the ratio is 2 to 1 lb of meat. I am curious on the freedom ranger for there foraging ability but when you see people posts pics of cornish and the ranger side by side I cringe lol.