They spend the winter from Kansas to Connecticut and south. They are also in New Mexico and west Texas. They breed in the eastern U.S. and Canada, south to Texas and Florida, Arizona through central Mexico and Nicaragua.
They are found in open woodlands, fields, and farms.
They are bright blue above with a reddish breast and white belly. The female is drab gray-blue with duller reddish chest. They are 6-8 in long.
Bluebird pairs arrive in the spring to nest and will use the same nest box from year to year. They can be quite aggressive toward other birds (swallows or sparrows) that try to use their nest box or nest boxes nearby.
They sit up on a high perch to hunt for insects.
They nest in tree cavities, weaving a nest of grass or pine needles, lined with grass, hair, or feathers. They lay 3-7 pale blue to white eggs. If available, they will nest in bird boxes and will defend the boxes from other birds trying to nest there (and sometimes nest in nearby boxes). Bluebird parents both bring food to their chicks. Young from earlier broods may also helps feed the new chicks. Bluebirds may have two and sometimes three broods of chicks.
Species: S. sialis
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Amsel, Sheri. "Bluebird (Eastern)" Exploring Nature Educational Resource ©2005-2023. December 8, 2023
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