Birds of St. Charles County, MO
Eastern Bluebird

Eastern Bluebird
Sialia sialis

Size: 7"

Male: (Shown) Rusty red breast and a white belly. Sky blue head, back, and tail.

Female: Shares rusty red breast and white belly, but is grayer with faint blue tail and wings.

Juvenile: Similar to female, with spots on chest and blue wing markings.

Nest: Nests in a cavity, old woodpecker hole, or man-made nest box. Nest is commonly built by female. Two broods per year.

Eggs: 4-5; pale blue without markings

Incubation: 12-14 days; female incubates

Fledging: 15-18 days; male and female feed young

Migration: The Eastern Bluebird is a partial migrator to non-migrator and can be seen on occasion in St. Charles County.

Food: Insects (especially mealworms) and fruit.

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