I spent the day building. I have 67 chicks, some will be roosters, but I built 21 more nest holes for the "new" coop. Yep that darn chicken math! I will screw a 2x4 on the wall then rest the million pound nest contraption on it then screw it to the wall through the back. (With my husbands help of course) The top row is actually separate from the bottom two rows, this makes it a tad easier to lift/move. I think that they will like it! Not bad for a girl!! HA! I made the floor of the boxes extended to be the perch platform as well.