- Eastern bluebirds are often seen in open woods and farmlands.
- Bluebirds eat insects like grasshoppers and crickets, as well as a variety of berries, including those from poison ivy.
- Early settlers were very fond of bluebirds and increased their habitat by clearing land for farms, planting orchards, and building thousands of miles of wooden fences with fence posts that bluebirds use for nesting.
- Bluebird numbers have decreased since the 19th century, due to competition for nesting sites and aggressive behavior from introduced starlings and house sparrows, and the reduction of available insect food due to pesticides.
