Therefore, providing nesting sites, while worthwhile, is only part of the picture. It should function as part of a broader strategy to conserve habitat. It is important, to learn about the bird species in your area, their specific habitat needs and to decide what types of nest boxes and locations are suitable for your property. There are many good resources available to help you. Both books provide valuable information about bird species, habitats and provide plans for different types of nest boxes.
Information is also available online.
Some sites include the North American Bluebird Society, North Carolina State University and the Backyard Birding page of the Baltimore Bird Club . Good commercially made nest boxes are available but many that are sold lack important features essential to a good nest box. Fortunately, building them is not very difficult and should be within the reach of most people. Regardless of the source, good nest boxes have some common characteristics. The wood should be rough surfaced, particularly in the interior of the box.