Black-necked Swan vs Mandarin Duck
Cygnus melancoryphus 比較対象 Aix galericulata
Side-by-Side Comparison
| 属性 | Black-necked Swan | Mandarin Duck |
|---|---|---|
| 学名 | Cygnus melancoryphus | Aix galericulata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 44.0 cm (17.3 in) |
| 翼開長 | 82.4 cm (32.4 in) | 70.0 cm (27.6 in) |
| 体重 | 5275.0 g (186.07 oz) | 570.0 g (20.11 oz) |
| 食性 | -- | Seeds, acorns, grains, aquatic plants, insects, snails, and small fish. Forages by dabbling, walking, and … |
| 一腹卵数 | 4-8 | 7-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black-necked Swan
Freshwater lakes, lagoons, rivers, estuaries, and coastal wetlands in southern South America from central Chile and Argentina to Tierra del Fuego. Partially migratory; concentrates at coastal estuaries in winter.
Mandarin Duck
Wooded lakes, rivers, and ponds surrounded by dense forest. Unlike most ducks, regularly perches in trees and nests in tree cavities.
Song & Call Comparison
Black-necked Swan
A musical, whistling 'whoo' or soft 'whooh'. Less loud than Trumpeter or Whooper Swan. Gives hissing at close range. Considered relatively quiet for a large swan.
Mandarin Duck
Male gives a low whistled 'hib' or 'weep'. Female utters a soft quacking 'kek'. Generally quiet and secretive. No loud territorial song; vocalizations subtle and brief.
Geographic Range & Migration
Black-necked Swan
Mandarin Duck
Native to East Asia including eastern Russia, China, Japan, and Korea. Feral populations established in Britain and western Europe.
保全状況
Black-necked Swan
Mandarin Duck
How to Tell Them Apart
Black-necked Swan
White body plumage with entirely black head, neck, and upper foreneck. Red double-lobed knob at bill base. Bill grayish-blue. White stripe behind eye. Pink-red legs. Sexes similar; striking contrast.
Mandarin Duck
Breeding males have an elaborate pattern of orange, green, white, and purple with distinctive orange sail feathers on the back. Females are grey-brown with a white eye-ring and stripe.
Small red bill in breeding males, pinkish in females
About These Birds
Black-necked Swan
A large elegant swan with pure white body plumage and a contrasting jet-black neck and head, a red bill with bright red caruncle, and a white stripe behind the eye. Native to southern South America. Unique coloration makes it unmistakable. Feeds on aquatic vegetation by upending.
Mandarin Duck
オシドリ。東アジア原産の美しいカモ。雄は鮮やかなオレンジ色の「帆羽」と複雑な羽毛模様が特徴的。体長41〜49cm。森林の池や川に生息し、樹洞に巣を作る。ドングリや水草を食べる。低危険種。