- Bluebirds begin breeding in early to late March in most areas.
- Breeding begins with males staking out potential nest sites and advertising them to prospective females with display flights and calls.
- Once the female chooses a site, she alone will build the nest and brood the eggs.
- Nests are built with grass, hay, and pine needles with an inner liner of softer grass, hair, and feathers. Construction takes about 10 days.
- Four to six powder blue eggs form each clutch.
- The male provides the family with beetles, grasshoppers, crickets, and other insects as well as various berries throughout the nesting period.
- Bluebird young leave the nest fully grown at 15 days and begin feeding on their own. A year later they are ready to raise young of their own.
- Bluebirds can raise as many as four families a season, breeding into late summer.
- Northern populations migrate in the winter; southern birds remain sedentary.
