A bluebird nest box is built using two boards, galvanized nails, a hinge, a saw and a hammer. This activity can be completed by both adults and supervised children.
To construct the box, gather two boards. The first should be 1 inch by 10 inches by 10 1/2 inches; this is the box's lid. The second is a 1 inch by 6 inch by 4-foot board. Cut that board into five pieces: a 4-inch floor, backboard, two 9 1/4-inch side pieces where the top of each is cut at a 45-degree angle, and a 9 3/8-inch front piece. The remainder of the board serves as the box's backing.
Nail the side and bottom boards to the back board. Nail the front board to the side and bottom boards. Mount the lid on an angle using a hinge.
Install the nest box on a 6-foot pole near the tallest tree. The entrance should face the tree. Install subsequent boxes a minimum of 100 yards away.
Bluebirds typically nest in March, although in certain states, such as Missouri, they reside year round. Raccoons, cats and snakes hunt them, and on occasion, wasps drive them from their nest boxes. To maintain a wasp-free environment, use commercially prepared spray to destroy their nest. Deter other predators with the use of metal cones or steel pipes with grease applied to them.