I am building a coop I have some old windows from a house we tore down on the property. I am planning on useing 2 as doors so basically one sid of the coop will be window. I will have a small10"x24" window over the nest boxes (not in them the nesting boxes will be darkish.the back wll will be solid and the frontwall will be solid the window wall is a southern exposure so it will get good light all day.