Black-headed Nightingale-thrush vs Eastern Bluebird
Catharus mexicanus 比較対象 Sialia sialis
Side-by-Side Comparison
| 属性 | Black-headed Nightingale-thrush | Eastern Bluebird |
|---|---|---|
| 学名 | Catharus mexicanus | Sialia sialis |
| 目 | Passeriformes | Passeriformes |
| 科 | Turdidae | Turdidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 17.5 cm (6.9 in) |
| 翼開長 | 17.8 cm (7.0 in) | 27.0 cm (10.6 in) |
| 体重 | 31.5 g (1.11 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 | 2-3 | 4-5 |
| Population Trend | — | — |
Size Comparison
Body Length
Black-headed Nightingale-thrush
—
Eastern Bluebird
17.5 cm
翼開長
Black-headed Nightingale-thrush
17.8 cm
Eastern Bluebird
27.0 cm
体重
Black-headed Nightingale-thrush
31.5 g
Eastern Bluebird
31.0 g
Habitat Comparison
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Song & Call Comparison
Black-headed Nightingale-thrush
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.
Geographic Range & Migration
Black-headed Nightingale-thrush
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
保全状況
Least Concern
Black-headed Nightingale-thrush
Least Concern
Eastern Bluebird
How to Tell Them Apart
Black-headed Nightingale-thrush
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
About These Birds
Black-headed Nightingale-thrush
黒い頭・灰色の体・橙色の嘴と目の輪を持つヒタキツグミ。メキシコからニカラグアの湿潤な山地林（標高1,000〜2,500m）に生息する。
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。