My four lovely chickens (14 week old pullets) are all settled into their coop and run after a week at our house. I would now like to let them free range from time to time. Mostly it would be for an hour or two when I'm home and out in the yard with them. But how do I convince them to get back in their covered run when free range time is done? Do I need to keep them out until sunset when they typically go into their coop? I'm really excited to allow them out to run around and eat all of the weeds in my yard, but concerned that I'll have chickens running/flying in all directions and won't be able to corral them. We live on five non-fenced acres but I plan to keep them to the area around our house. Will they generally stay put or will they run off the instant I let them out of the run? Also, we have lots of cactuses here - mostly barrel and prickly pear. Are chickens smart enough to know not to rub themselves on a cactus?