Hey guys, I just finished my coop and bought my first chickens, 6 Rhode Island Red hens and a Rooster. I built my coop identical to this (http://greenterrafirma.com/images/chicken-coop1.jpg) but a good bit larger, 9x7. I live out in the country and would like to free range my chickens in the yard but I need some advice on how to introduce them to life outside of the coop without them running away. I will shut them up at night once they go to roost. thanks!