Eastern Bluebird: Harbinger of Spring
… ContinueThis YouTube video was produced by the American Bird Conservancy.
The vibrant colors and soft, musical warbles of the Eastern Bluebird (Sialia sialis) are a welcome sight on a cold, snowy day. Bluebirds have long been considered harbingers of spring, from Mexico to the eastern United States, and their willingness to nest in open, human-modified habitats makes them popular among birders and non-birders alike.
Eastern Bluebird populations plunged in the early 20th century, when non-native House Sparrows and European Starlings were introduced into the United States. Both of these invasive species are also cavity-nesters and much more aggressive than bluebirds,
