Eastern Bluebird vs Japanese White-eye
Sialia sialis 比較対象 Zosterops japonicus
Side-by-Side Comparison
| 属性 | Eastern Bluebird | Japanese White-eye |
|---|---|---|
| 学名 | Sialia sialis | Zosterops japonicus |
| 目 | Passeriformes | Passeriformes |
| 科 | Turdidae | Zosteropidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 17.5 cm (6.9 in) | 11.5 cm (4.5 in) |
| 翼開長 | 27.0 cm (10.6 in) | 17.0 cm (6.7 in) |
| 体重 | 31.0 g (1.09 oz) | 11.0 g (0.39 oz) |
| 食性 | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … | Insects, nectar, and fruit. Active gleaner that flits through foliage and visits flowers. Important pollinator … |
| 一腹卵数 | 4-5 | 2-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Japanese White-eye
Broadleaf evergreen forests, gardens, parks, and suburban areas. Highly adaptable and common in East Asian gardens.
Song & Call Comparison
Eastern Bluebird
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.
Japanese White-eye
Sweet, high-pitched 'tsee-tsee-tsee' whistle and soft melodic warbling. Flocks produce a continuous tinkling chorus. Alarm is a sharper 'tset'. Song is gentle and rhythmic.
Geographic Range & Migration
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
Japanese White-eye
East Asia including Japan, China, Korea, Taiwan, Vietnam, and the Philippines. Introduced to Hawaii and other Pacific islands.
保全状況
Eastern Bluebird
Japanese White-eye
How to Tell Them Apart
Eastern Bluebird
Males are vivid royal blue above with a rusty-red breast and white belly. Females are grey-blue with a paler rust breast.
Short, thin, dark bill
Japanese White-eye
Olive-green upperparts with a bright white eye-ring. Yellow throat and undertail coverts. Greyish-white belly.
Thin, pointed, slightly decurved dark bill
About These Birds
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。
Japanese White-eye
The Japanese white-eye is a familiar garden bird across East Asia, beloved in Japan where it is called mejiro. These sociable birds form flocks outside the breeding season and are important pollinators of plum and cherry blossoms. Unfortunately, introduced populations in Hawaii have become invasive, competing with native honeycreepers.