Mandarin Duck vs Northern Gannet
Aix galericulata 比較対象 Morus bassanus
Side-by-Side Comparison
| 属性 | Mandarin Duck | Northern Gannet |
|---|---|---|
| 学名 | Aix galericulata | Morus bassanus |
| 目 | Anseriformes | Suliformes |
| 科 | Anatidae | Sulidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 44.0 cm (17.3 in) | 93.0 cm (36.6 in) |
| 翼開長 | 70.0 cm (27.6 in) | 180.0 cm (70.9 in) |
| 体重 | 570.0 g (20.11 oz) | 3000.0 g (105.82 oz) |
| 食性 | Seeds, acorns, grains, aquatic plants, insects, snails, and small fish. Forages by dabbling, walking, and … | Shoaling fish, especially mackerel, herring, and capelin. Plunge-dives from heights of 30 meters at speeds … |
| 一腹卵数 | 7-14 | 1 |
| 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.
Northern Gannet
Open ocean and coastal waters. Breeds in dense colonies on steep rocky islands and sea stacks.
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.
Northern Gannet
Loud, harsh 'urrah-urrah' grunting and croaking at breeding colonies on sea stacks. Also gives a softer 'karrr' in flight. Large colonies are extremely noisy during the breeding season.
Geographic Range & Migration
Mandarin Duck
Native to East Asia including eastern Russia, China, Japan, and Korea. Feral populations established in Britain and western Europe.
Northern Gannet
North Atlantic, breeding from Newfoundland and Gulf of St. Lawrence to Norway, Iceland, and Britain. Winters at sea south to the tropics.
保全状況
Mandarin Duck
Northern Gannet
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
Northern Gannet
Brilliant white body with black wingtips and a golden-yellow wash on the head and nape. Blue-grey bill with dark lines and pale blue eye-ring.
Long, straight, pointed, pale blue-grey bill with serrated edges
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。
Northern Gannet
The northern gannet is a spectacular plunge-diver, folding its two-meter wingspan into an arrow shape to hit the water at up to 100 km/h. Air sacs under the skin and a reinforced skull protect it from the impact. Bass Rock in Scotland hosts over 150,000 gannets, the largest single colony of any seabird in the world.