We have 6 week old pullets who have only just been released into their coop (last weekend). I am anxious to let them free range. I know some disagree with that-feeling perhaps that it is not safe. However, I really would like the chickens to have more freedom. They will only be "out" when we are home-mostly only weekends. So my question is, how long do they need to stay in the coop before I can let them out in our yard around the house? Thoughts are appreciated! Thank you!