ooooooooohh gord here we go again, ITS NOT NATURAL YOU KNOW, there ive said it first, Ime waiting to put a light up but you need the hens to have a bit of a winter so i may put mine up next week, it shouldnt be too bright a 10 15w low energy buld should do it, as if its to bright when it goes off they think its evening again if its a dull day, mine will go on about 4 am.