Flyways and Byways: Attracting bluebirds

For many birdwatchers, the eastern bluebird is a favorite species to invite into their backyards. This species, as well as purple martins, tolerate humans in their habitats and have come to rely on us for food and shelter. The number of this friendly and colorful species dropped precipitously in past decades, mainly because of pesticide use, predators and loss of habitat. Bluebirds are cavity nesters, like wrens, chickadees, swallows and...