How to Build a Bird Box

Carefully assemble the sides, base, and front on top of the back -- making sure the corners and edges align properly. If the sections are slightly too big, then you can cut them down slightly by 1/8"-1/4". Nail the sections together (except the top) with 1.5" box nails. Place the sections approximately half-way along the back, allowing space to mount the back to a fence or similar structure. Ideally, the nails are galvanized to prevent rusting.