Western Bluebird

Sialia mexicanaOrder: PASSERIFORMESFamily: Thrushes (Turdidae)

Breeding Location:

Grassland with scattered trees, Desert, Desert, semi

Breeding Type:

Monogamous, Solitary nester

Breeding Population:

Egg Color:

Pale blue

Number of Eggs:

3 - 8

Incubation Days:

13 - 14

Egg Incubator:

Female

Nest Material:

Grass, weeds, stems, pine needles, and twigs.

Migration:

Northern birds migrate

Overview

Western Bluebird: Small thrush with deep blue hood and upperparts, crescent mark across upper back, red-brown breast, and white belly. Bill, legs and feet are black. Populations are declining due to competition for nest sites with European Starlings, Tree Swallows and House Sparrows.

Range and Habitat

Western Bluebird: Breeds from southern British Columbia and western Alberta south to Baja and east throughout the mountains of the west to eastern New Mexico and extreme western Texas. Spends winters throughout most of its breeding range, although northernmost populations usually withdraw slightly southward. Preferred habitats include open woodlands and pastures where old trees provide nest sites.

Breeding and Nesting

Western Bluebird: Three to eight pale blue eggs are laid in a grass nest built in a tree cavity or woodpecker hole. Incubation ranges from 13 to 14 days and is carried out by the female.

Foraging and Feeding

Western Bluebird: Diet consists of insects, earthworms, spiders, and snails. Takes berries during winter. Often hunts from low perches, from which it drops down to the ground to capture prey; also catches flying insects.

Readily Eats

Raisins, Currants, Nut Meal

Vocalization

Western Bluebird: Call is a soft "kew," repeated several times.

Similar Species

Western Bluebird: Eastern Bluebird has red-brown throat and breast, white belly and undertail coverts, and blue back.

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Bird Call Credits: The Macaulay Library of Natural Sounds at the Cornell Lab of Ornithology. Martyn Stewart, http://www.naturesound.org, Redmond, Washington USA. The reuse or copying of bird calls in this database is strictly forbidden.

Western Bluebird

● Song: "kew-kew-kew-kew-kew"

● Foraging & Feeding: Western Bluebird: Diet consists of insects, earthworms, spiders, and snails. Takes berries during winter. Often hunts from low perches, from which it drops down to the ground to capture prey; also catches flying insects.

● Breeding & nesting: Western Bluebird: Three to eight pale blue eggs are laid in a grass nest built in a tree cavity or woodpecker hole. Incubation ranges from 13 to 14 days and is carried out by the female.

● Similar species: Western Bluebird: Eastern Bluebird has red-brown throat and breast, white belly and undertail coverts, and blue back.

Flight Pattern

Slow flight with shallow wing beats.

Western Bluebird Breeding Male Body Illustration

● Range & Habitat: Western Bluebird: Breeds from southern British Columbia and western Alberta south to Baja and east throughout the mountains of the west to eastern New Mexico and extreme western Texas. Spends winters throughout most of its breeding range, although northernmost populations usually withdraw slightly southward. Preferred habitats include open woodlands and pastures where old trees provide nest sites.

^BreedingMonogamous, Solitary nester

^Population

^MigrationNorthern birds migrate

^Weight1 Ounces

Field Guide to Birds of North America