Bicknell's Thrush vs Eastern Bluebird
Catharus bicknelli 比較対象 Sialia sialis
Side-by-Side Comparison
| 属性 | Bicknell's Thrush | Eastern Bluebird |
|---|---|---|
| 学名 | Catharus bicknelli | 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 | 18.2 cm (7.2 in) | 27.0 cm (10.6 in) |
| 体重 | 27.583333333333332 g (0.97 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 | 3-4 | 4-5 |
| Population Trend | — | — |
Size Comparison
Body Length
Bicknell's Thrush
—
Eastern Bluebird
17.5 cm
翼開長
Bicknell's Thrush
18.2 cm
Eastern Bluebird
27.0 cm
体重
Bicknell's Thrush
27.583333333333332 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
Bicknell's 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
Bicknell's Thrush
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
保全状況
Vulnerable
Bicknell's Thrush
Least Concern
Eastern Bluebird
How to Tell Them Apart
Bicknell's 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
Bicknell's Thrush
脆弱種で、米国北東部・カナダの山地トウヒ・モミ林で繁殖し、カリブ海・ヒスパニオラで越冬するツグミ。
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。