We live in an area with just about every predator you can think of - mountain lions, wolves, coyotes, hawks & eagles, weasles, raccoons, etc., so we have kept our flock in a very secure coop and run for the past six months. It is impossible to free-range them during the day. I am thinking of putting together a chicken tractor for next summer so they could free-range in it during the day. I would have to put them back in the ultra-secure coop at night. What I am wondering is would it really be possible to "herd" the hens into the tractor in the morning and then back to the coop at night? A lot of funny images come to my mind when I read this!