Build a house for a specific bird. Build a birdhouse for a cavity_nesting bird that occurs in your region and lives in the habitat in which you plan to put in a birdhouse. (See Birdhouse Dimension Table to select a species.) Build the right size house and hole dimensions. Different species of birds require different sized houses and entrance holes. Inside dimensions must be large enough to accommodate the incubating biard and a brood of growing young. Entrance hole size is especially important. If the hole is too small, the bird you built the box for won't be able to get inside. If the hole is too big, predatory birds and mammals will be able to get inside and reach the nest, and cavity_nesting birds may not use the house.
If you are an confident woodworker with some building experience, you may even feel comfortable designing your own bird house with the information you've learned about what nesting birds want. If you are a novice, however, building a bird house from scratch may seem too intimidating or ambitious, even with detailed plans. In that case, you may want to consider using a bird house kit with pre_cut pieces to assemble. Another option is to start with a simple bird house and make modifications to the design to make it more bird_friendly to suit the species you hope will take up residence.