Mandarin Duck vs ヘビクイワシ
Aix galericulata 比較対象 Sagittarius serpentarius
Side-by-Side Comparison
| 属性 | Mandarin Duck | ヘビクイワシ |
|---|---|---|
| 学名 | Aix galericulata | Sagittarius serpentarius |
| 目 | Anseriformes | Accipitriformes |
| 科 | Anatidae | Sagittariidae |
| 保全状況 | Least Concern | Endangered |
| 体長 | 44.0 cm (17.3 in) | 130.0 cm (51.2 in) |
| 翼開長 | 70.0 cm (27.6 in) | 210.0 cm (82.7 in) |
| 体重 | 570.0 g (20.11 oz) | 3700.0 g (130.51 oz) |
| 食性 | Seeds, acorns, grains, aquatic plants, insects, snails, and small fish. Forages by dabbling, walking, and … | Snakes, lizards, small mammals, and large insects. Hunts on foot, stomping prey to death with … |
| 一腹卵数 | 7-14 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mandarin Duck
Wooded lakes, rivers, and ponds surrounded by dense forest. Unlike most ducks, regularly perches in trees and nests in tree cavities.
ヘビクイワシ
Open grasslands, savannas, and light woodland across sub-Saharan Africa. Avoids dense forests and very arid regions.
Song & Call Comparison
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.
ヘビクイワシ
A surprisingly deep, resonant croaking 'kowrr-kowrr' often heard at dawn on African savannas. Also gives pig-like grunting sounds. Mostly silent compared to true songbirds.
Geographic Range & Migration
Mandarin Duck
Native to East Asia including eastern Russia, China, Japan, and Korea. Feral populations established in Britain and western Europe.
ヘビクイワシ
Sub-Saharan Africa from Senegal and Somalia south to South Africa. Resident throughout its range.
保全状況
Mandarin Duck
ヘビクイワシ
How to Tell Them Apart
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
ヘビクイワシ
Grey body plumage with black flight feathers and thigh feathers. Distinctive long black crest feathers trail from the back of the head. Orange-red bare facial skin.
Short, strong, hooked greyish bill with a yellowish cere
About These Birds
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。
ヘビクイワシ
The secretary bird is the only raptor that hunts primarily on foot, striding through grasslands on crane-like legs up to 1.2 meters tall. Its name may derive from the crest feathers resembling quill pens tucked behind a secretary's ear. The species is classified as Endangered due to habitat loss and decline across much of its range.