I am building a newer, nicer chicken coop. I would like to have a light in it both to help them lay better in winter and so I can see in there in the dark if I need to check on them. The coop is 4 feet by 6 feet inside, how much light should I have in there to keep them laying? Because my house sits in a hole surrounded by large hills, it starts to get dark now around 5 pm and the birds start going to bed, and the sun is not really out until 7 because it's behind the hill, so they are not getting much daylight. The issue is that the coop is pretty far from the nearest source of electricity (no choice but to do it that way) so the only way to plug a standard light in would be to have 300 feet or more of extension cord running across the property from inside the house somehow...which is not an option, since this is not my house and I don't make the rules...so, I am looking into the possibility of solar or maybe battery powered lights, I just don't know how bright I need to get it in there. Does anyone have any advice?