Nesting habitat: Open habitats with scattered trees, such as farmland, orchards, and the edges of open coniferous and deciduous forests.

Nest site: Females build nests in the natural cavities of snags or rotting trees, in woodpecker holes, or in nest boxes. These nests can be anywhere from 4 to 40 feet above the ground.

Nest type: A loose collection of grasses, weed stems, and, sometimes, hair and feathers.

Eggs:
Clutch size: 4-6 common, but clutches can range from 3-8 eggs.
Color: Unmarked pale blue, bluish-white, or white.
Egg size: 21.57 mm x 16.11 mm.

Incubation period: 13 to 14 days.

Nestling period: Both adults tend the young, feeding them mostly soft-bodied insects. Fledge between 19 to 22 days.

Number of broods per season: Usually 2.