Hello All. Thank you for this great website and forum. I have been lurking and learning for months. Today I decided to join because, like so many, I need guidance and expertise. I got my first 5 chickens a few days ago. They are free-range birds. The coop is well ventilated, but lets in almost no light (no windows) unless the top is open. I keep it open all day and stay alert for predators. At night, very little light shines through the ventilation holes from my porch when it's closed. Is this OK or should the inside of the coop be pitch black darkness at night? Secondly, when I run errands during the day, is it OK to leave the chickens in their dark coop for a couple of hours?