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Side-by-Side Comparison

Attribut	Javan Cochoa	Eastern Bluebird
Nom scientifique	Cochoa azurea	Sialia sialis
Ordre	Passeriformes	Passeriformes
Famille	Turdidae	Turdidae
Statut de conservation	Vulnerable	Least Concern
Longueur	—	17,5 cm (6.9 in)
Envergure	23,2 cm (9.1 in)	27,0 cm (10.6 in)
Poids	111,5 g (3.93 oz)	31,0 g (1.09 oz)
Régime alimentaire	--	Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to …
Taille de la couvée	2	4-5
Population Trend	—	—

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Size Comparison

Body Length

Javan Cochoa —

Eastern Bluebird 17,5 cm

Envergure

Javan Cochoa 23,2 cm

Eastern Bluebird 27,0 cm

Poids

Javan Cochoa 111,5 g

Eastern Bluebird 31,0 g

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Habitat Comparison

Habitats partagés

Aucun(e)

Javan Cochoa only

🌲 Forest

Eastern Bluebird only

🌾 Grassland

Eastern Bluebird

Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.

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Song & Call Comparison

Javan Cochoa

Eastern Bluebird

Chant

A rich, melodious warbled 'chur-wi, tur-a-lee' song. Both sexes sing. Call is a soft, musical 'turee'. Song is gentle and flute-like, suggesting a small thrush. Given from exposed perch.

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Geographic Range & Migration

Javan Cochoa

Eastern Bluebird

Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.

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Statut de conservation

Vulnerable

Javan Cochoa

Least Concern

Eastern Bluebird

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How to Tell Them Apart

Javan Cochoa

Eastern Bluebird

Plumage

Males are vivid royal blue above with a rusty-red breast and white belly. Females are grey-blue with a paler rust breast.

Bec

Short, thin, dark bill

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About These Birds

Javan Cochoa

Eastern Bluebird

The eastern bluebird is a beloved symbol of happiness in North America. Once declining due to habitat loss and competition from introduced species, populations recovered dramatically thanks to a massive citizen science nest box campaign. These gentle thrushes form loose winter flocks and huddle together in nest boxes during cold snaps.

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Related Comparisons

American Robin vs Eastern Bluebird

same-family

Common Kingfisher vs Eastern Bluebird

look-alike

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