OK...this is my 2 cents worth, from my experience. If you start with letting the chickens out sometimes..then there is never enough free time(in their minds). Be consistant...use your head not your heart(not like me) give them plenty of things to do when confined!!...in my opinon, once you start letting them out free....they never forget it....and neighbor cats are sneaky...they love to stalk chickens!!! And I think someone mentioned some chickens do better free ranging then others?