Eastern Bluebird vs Grand Cayman Thrush
Sialia sialis 比較対象 Turdus ravidus
Side-by-Side Comparison
| 属性 | Eastern Bluebird | Grand Cayman Thrush |
|---|---|---|
| 学名 | Sialia sialis | Turdus ravidus |
| 目 | Passeriformes | Passeriformes |
| 科 | Turdidae | Turdidae |
| 保全状況 | Least Concern | Extinct |
| 体長 | 17.5 cm (6.9 in) | — |
| 翼開長 | 27.0 cm (10.6 in) | — |
| 体重 | 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 | 4-5 | -- |
| Population Trend | — | — |
Size Comparison
Body Length
Eastern Bluebird
17.5 cm
Grand Cayman Thrush
—
翼開長
Eastern Bluebird
27.0 cm
Grand Cayman Thrush
—
体重
Eastern Bluebird
31.0 g
Grand Cayman Thrush
—
Habitat Comparison
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Song & Call Comparison
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.
Grand Cayman Thrush
Geographic Range & Migration
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
Grand Cayman Thrush
保全状況
Least Concern
Eastern Bluebird
Extinct
Grand Cayman Thrush
How to Tell Them Apart
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
Grand Cayman Thrush
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。