Open woodlands, clearings, farmlands, parks, orchards, gardens, fields, along roadsides on utility wires and fences. Numbers declined due to competition from starlings and house sparrows for nest sites. Making a comeback as people erect bluebird houses. Forest edge, burned or cutover woodland, open country with scattered trees. 2, occasionally 3 broods.
Mating system is monogamous.
Courting male sings and flutters in front of female, wings half open, tail spread, then perches beside and preens female, and may offer food. Built in average 10-11 days. Female occasionally builds more than 1 nest. Pale blue, occasionally white, unmarked. Incubation takes 12-14 days.