This pic is taken from INSIDE the nest box you look at in no. III of this series. In this pic, the main door (closed) is to the left. You can see the little ladder from roost to nest box. I have two nest boxes, btw. In my remodeling of this coop when I complete the second one and cut the second door. I may move both nestboxes to the inside of the coop. It is right above this nest box that the little babies pulled out the insulation panel in their slumber party Saturday night!