The following information is meant to help you build birdhouses suitable for Alaskan birds. More information on birdhouses can be found at your local library or bookstore. Birds that nest in cavities are the only ones attracted to nest boxes. In Alaska, 30 bird species nest in cavities, and 21 of these will use birdhouses. Excepting Snow Buntings, which nest in natural and man_made cavities in tundra areas, most cavity_nesting birds prefer to nest in holes in trees.