Making a wooden birdhouse is a craft project you can complete even if you are not an experienced woodworker. Create your bird houses from wood that is naturally resistant to mildew, and they will last much longer. Woods such as cedar, teak and redwood are appropriate choices. Of these three, cedar contains oil that also repels snakes, so your feathered friends will have a safer environment if you choose this option.
Measure and cut one 12-inch long piece from the cedar board. The birdhouse will be 12 inches deep and 12 inches wide. Cut five 15-inch long pieces from the board.
Drill a 1-1/2-inch hole in the middle of one of the 15-inch long boards. Different sized openings attract different birds. If you are making a bird house for a specific species, research the specifications and drill the appropriate sized hole. For example, chickadees prefer openings that are 1-1/8 inches in diameter, while bluebirds, swallows, wrens and some woodpeckers prefer a 1-1/2-inch opening.
Place a 15-inch long board (without a hole) face down on a flat surface. Measure 12 inches from the bottom and place a mark. Draw a straight line angling down from the top corner of the board to the mark. Cut along this line to create a pitch for your bird house roof. Repeat this step on another 15-inch board.
Attach the two angled 15-inch boards perpendicular to the 15-inch board with the drilled opening, one on each side. These three boards will form a squared-off U shape. Attach the 12-inch long board perpendicular to the two angled boards to form the fourth wall. Use 1-1/2-inch decking screws placed 2 inches apart to attach all of the wood components of your bird house.
Attach the four walls to a 15-inch long board using 1-1/2-inch decking screws placed 2 inches apart. Place the back wall flush with the back edge of the board. This will give the birds a 3-inch deep front porch and perch.
Use 1-1/2-inch decking screws 2 inches apart to attach the remaining 15-inch long board to the top of your four walls so the back edge is flush with the back wall. This will give your bird house a pitched roof for water drainage. This also gives the porch a 3-inch cover.
Drill a few small air holes along the top edges of each side for circulation.