This might sound silly to all of you experts, but I am having a problem distinguishing what is really free range. I have heard that the chickens run free without barriers. I have also heard that as long as you let them out of the coop, they are free range. I am planning on having a coop with a small run attached 4' X 8' and then having another attached to that which will be 12' x 12' fenced but not covered. I am planning on about 6 chickens. They will be able to roam from the coop to the first run and to the 12 x 12 yard as they wish. In the winter, I will cover the small run and not allow them into the yard. Are they then considered free range? I have also heard the term "Pastured" What exactly does that mean? Thanks!