ハクトウワシ vs Common Nightingale
Haliaeetus leucocephalus 比較対象 Luscinia megarhynchos
Side-by-Side Comparison
| 属性 | ハクトウワシ | Common Nightingale |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Luscinia megarhynchos |
| 目 | Accipitriformes | Passeriformes |
| 科 | Accipitridae | Muscicapidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 79.0 cm (31.1 in) | 16.5 cm (6.5 in) |
| 翼開長 | 203.0 cm (79.9 in) | 25.0 cm (9.8 in) |
| 体重 | 4300.0 g (151.68 oz) | 21.0 g (0.74 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Insects and larvae, supplemented with berries in autumn. Forages on or near the ground in … |
| 一腹卵数 | 1-4 | 4-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
ハクトウワシ
Large bodies of open water including coasts, rivers, and lakes with abundant fish and old-growth trees for nesting.
Common Nightingale
Dense thickets, scrub, and undergrowth in deciduous woodland. Prefers areas with thick ground cover near water.
Song & Call Comparison
ハクトウワシ
High-pitched, chattering whistle: a rapid 'kleek-kik-ik-ik-ik'. Surprisingly weak and thin for such a large raptor. Also gives a lower 'kwit-kwit' call near the nest.
Common Nightingale
Considered Europe's finest songster: an extraordinarily rich, loud, flute-like melody of bubbling trills, slow whistles, and a distinctive crescendo 'lu-lu-lu'. Sings day and night.
Geographic Range & Migration
ハクトウワシ
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Common Nightingale
Breeds in Europe and western Asia. Winters in sub-Saharan Africa. A long-distance migrant crossing the Sahara.
保全状況
ハクトウワシ
Common Nightingale
How to Tell Them Apart
ハクトウワシ
Adults have a dark brown body with a striking white head and tail. Juveniles are mottled brown and white, reaching full adult plumage at age five.
Large, hooked, bright yellow bill
Common Nightingale
Plain warm brown upperparts with a rufous-chestnut tail. Pale greyish-white underparts. Unremarkable appearance belies its remarkable voice.
Thin, pointed, dark brown bill
About These Birds
ハクトウワシ
ハクトウワシはアメリカ合衆国の国鳥で国の象徴である。DDT農薬使用により一度は絶滅の危機に瀕したが、見事な回復を遂げ、2007年に絶滅危惧種リストから外された。これらの力強い猛禽類は、2トンを超えるものもある鳥類最大の木の巣を作る。
Common Nightingale
サヨナキドリ（Luscinia megarhynchos）— ヨーロッパ・中央アジアに分布し、アフリカで越冬する。夜間にも聴こえる複雑で豊かな歌声で知られる。