I have three pet hens in a nice coop with a run attached. The inside of this coop is pretty dark because of the roof of the coop. The sun comes up good here around 7:30 or 8:00 am and goes down by 6:30 or so. The hens are laying 1-2 eggs a day but I really do not have them for eggs. The are mainly pets and we receive the benefits of the eggs. That being said, do I need any artificial light?