Living in an area surrounded by chicken houses, I was curious as to what constitutes a free range chicken. Before you spend your hard earned money on them, see what the USDA say's.
When the USDA certifies a package of chicken as free range, it means that the chicken had access to the outdoors. There are no requirements for length of time spent outdoors, the size of the outdoor area or the type of ground cover. There is no guarantee that the chicken ever ventured out of the enclosure.
So, leaving the door of the chicken house open for a few minutes now allows you to call them "Free Range". It's always about the $$$$$ people.