Black-necked Crane vs Red-crowned Crane
Grus nigricollis 比較対象 Grus japonensis
Side-by-Side Comparison
| 属性 | Black-necked Crane | Red-crowned Crane |
|---|---|---|
| 学名 | Grus nigricollis | Grus japonensis |
| 目 | Gruiformes | Gruiformes |
| 科 | Gruidae | Gruidae |
| 保全状況 | Near Threatened | Endangered |
| 体長 | — | 150.0 cm (59.1 in) |
| 翼開長 | 115.8 cm (45.6 in) | 250.0 cm (98.4 in) |
| 体重 | 6000.0 g (211.64 oz) | 8900.0 g (313.94 oz) |
| 食性 | -- | Omnivorous — fish, amphibians, insects, grasses, and waste grain. Forages in wetlands and agricultural fields. |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Red-crowned Crane
Freshwater marshes, bogs, and wet grasslands for breeding. Winters in coastal mudflats, estuaries, and rice paddies.
Song & Call Comparison
Black-necked Crane
Red-crowned Crane
Spectacular unison 'bugling' call: a clear, resonant, far-carrying trumpet 'kru-ru-ru' given by paired birds simultaneously. Among the most majestic bird calls in Asia.
Geographic Range & Migration
Black-necked Crane
Red-crowned Crane
Eastern Asia — breeds in northeastern China, southeastern Russia, and Hokkaido, Japan. Winters in Korea and eastern China.
保全状況
Black-necked Crane
Red-crowned Crane
How to Tell Them Apart
Black-necked Crane
Red-crowned Crane
White body plumage with black secondary flight feathers and throat. Bare red crown patch. Black face and neck. One of the most elegant crane species.
Long, straight, olive-green bill
About These Birds
Black-necked Crane
クロヅル（Grus nigricollis）はチベット高原に固有の大型ツル（体長115〜120 cm）。白い体に黒い首・頭・翼端、裸出した赤い冠。高原で繁殖する唯一のツルで、標高4,000 m以上に営巣。低地ではブータン・インド・雲南省で越冬。絶滅危惧種；個体数は約10,000羽。
Red-crowned Crane
The red-crowned crane is one of the rarest crane species and a potent symbol of longevity and fidelity in East Asian culture. Their elaborate unison call and dancing displays have inspired art and folklore for millennia. The resident population on Hokkaido, Japan, recovered from about 33 birds in 1952 to over 1,800 today.