Eastern Bluebird vs Hawfinch
Sialia sialis 比較対象 Coccothraustes coccothraustes
Side-by-Side Comparison
| 属性 | Eastern Bluebird | Hawfinch |
|---|---|---|
| 学名 | Sialia sialis | Coccothraustes coccothraustes |
| 目 | Passeriformes | Passeriformes |
| 科 | Turdidae | Fringillidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 17.5 cm (6.9 in) | 18.0 cm (7.1 in) |
| 翼開長 | 27.0 cm (10.6 in) | 32.0 cm (12.6 in) |
| 体重 | 31.0 g (1.09 oz) | 55.0 g (1.94 oz) |
| 食性 | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … | Seeds and kernels, especially from cherries, olives, elms, and hornbeams. The bill exerts a force … |
| 一腹卵数 | 4-5 | 3-5 |
| 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.
Hawfinch
Deciduous and mixed woodland, orchards, parks, and large gardens with mature fruiting trees.
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.
Hawfinch
A sharp, metallic 'tsick' call — the primary vocalization and often all that's heard. Song is a thin, reedy warble. Generally inconspicuous vocally despite its striking appearance.
Geographic Range & Migration
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
Hawfinch
Europe, North Africa, and western and central Asia. Partially migratory, with northern populations moving south in winter.
保全状況
Eastern Bluebird
Hawfinch
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
Hawfinch
Orange-brown head with a black bib and eye stripe. Warm brown back, grey nape, and broad white wing bar. Massive head and bill give a top-heavy appearance.
Enormously powerful, conical, pale bill capable of cracking cherry and olive stones
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。
Hawfinch
シメはヨーロッパの鳥の中で体の大きさに対して最も強力なくちばしを持ち、27〜43 kgの力でサクランボの種を割ることができる。その特徴的な外見にもかかわらず、著名なほど恥ずかしがり屋で観察が難しい。種割り時に発生する巨大な力を吸収するための頭骨の特殊な適応を持つ。