Clutch size and breeding success was related to nest-box size in 215 nests of Tengmalm's owl in the Kauhava region, western Finland in 1966-82. In vole peak years, but not in other years, mean clutch ...

Eastern bluebirds (Sialia sialis), often referred to as “harbingers of spring,” are small — about 7 inches — cavity nesters often found near meadows. A relative of the robin, this native songbird ...

Nesting birds are rewarding to watch. Get expert tips for on how to attract birds to a birdhouse and learn how to choose the ...

Feeders, water and birdhouses are three good ways to bring birds to your yard. The latter offers pleasures the former do not. Birds that nest in houses or boxes are obligate cavity nesters: obligated ...