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Side-by-Side Comparison

属性	Javan Cochoa	Eastern Bluebird
学名	Cochoa azurea	Sialia sialis
目	Passeriformes	Passeriformes
科	Turdidae	Turdidae
保全状況	Vulnerable	Least Concern
体長	—	17.5 cm (6.9 in)
翼開長	23.2 cm (9.1 in)	27.0 cm (10.6 in)
体重	111.5 g (3.93 oz)	31.0 g (1.09 oz)
食性	--	Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to …
一腹卵数	2	4-5
Population Trend	—	—

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Size Comparison

Body Length

Javan Cochoa —

Eastern Bluebird 17.5 cm

翼開長

Javan Cochoa 23.2 cm

Eastern Bluebird 27.0 cm

体重

Javan Cochoa 111.5 g

Eastern Bluebird 31.0 g

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Habitat Comparison

共通生息地

None

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

さえずり

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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保全状況

Vulnerable

Javan Cochoa

Least Concern

Eastern Bluebird

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How to Tell Them Apart

Javan Cochoa

Eastern Bluebird

羽毛

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

くちばし

Short, thin, dark bill

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About These Birds

Javan Cochoa

Eastern Bluebird

北米に生息するヒタキで、青い上面とオレンジ色の胸を持つ。巣箱の設置プログラムにより個体数が回復した。

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Related Comparisons

American Robin vs Eastern Bluebird

same-family

Common Kingfisher vs Eastern Bluebird

look-alike

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