ハクトウワシ vs Demoiselle Crane
Haliaeetus leucocephalus 比較対象 Anthropoides virgo
Side-by-Side Comparison
| 属性 | ハクトウワシ | Demoiselle Crane |
|---|---|---|
| 学名 | Haliaeetus leucocephalus | Anthropoides virgo |
| 目 | Accipitriformes | Gruiformes |
| 科 | Accipitridae | Gruidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 79.0 cm (31.1 in) | 90.0 cm (35.4 in) |
| 翼開長 | 203.0 cm (79.9 in) | 175.0 cm (68.9 in) |
| 体重 | 4300.0 g (151.68 oz) | 2500.0 g (88.18 oz) |
| 食性 | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Seeds, grasses, insects, snails, worms, and small vertebrates. Forages in grasslands and agricultural fields. |
| 一腹卵数 | 1-4 | 2 |
| 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.
Demoiselle Crane
Dry grasslands, savannas, and semi-desert. Nests on the ground in open country, often near water. Winters in agricultural fields.
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.
Demoiselle Crane
A high-pitched, bugling 'karr-r-r' in flight. Also gives softer clucking and purring contact calls. Migrating flocks produce a continuous musical babbling audible from great distance.
Geographic Range & Migration
ハクトウワシ
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Demoiselle Crane
Central Eurasia from the Black Sea to Mongolia and northeastern China. Winters in India and sub-Saharan Africa.
保全状況
ハクトウワシ
Demoiselle Crane
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
Demoiselle Crane
Pale blue-grey body with a black head, neck, and breast plumes. White ear tufts extend behind the red eyes. Long black tertials drape over the tail.
Short, yellowish-olive bill, shorter than other cranes
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。
Demoiselle Crane
The demoiselle crane is the smallest crane species but undertakes one of the most grueling migrations, crossing the Himalayas at altitudes over 8,000 meters to reach wintering grounds in India. Named for its elegant appearance by Marie Antoinette, it is the second most abundant crane species in the world.