Mandarin Duck vs Goosander
Aix galericulata 比較対象 Mergus merganser
Side-by-Side Comparison
| 属性 | Mandarin Duck | Goosander |
|---|---|---|
| 学名 | Aix galericulata | Mergus merganser |
| 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 | 70.0 cm (27.6 in) | 54.2 cm (21.3 in) |
| 体重 | 570.0 g (20.11 oz) | 1488.0 g (52.49 oz) |
| 食性 | Seeds, acorns, grains, aquatic plants, insects, snails, and small fish. Forages by dabbling, walking, and … | Dives for fish, especially salmon and trout, in rivers and lakes. Also takes frogs, crustaceans, … |
| 一腹卵数 | 7-14 | 4-22 |
| 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.
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.
Goosander
Male gives a harsh, crow-like karrr call; female produces a guttural, grunting series. Both sexes produce loud, nasal calls; the male's harsh croaking is a distinctive winter river sound.
Geographic Range & Migration
Mandarin Duck
Native to East Asia including eastern Russia, China, Japan, and Korea. Feral populations established in Britain and western Europe.
Goosander
Breeds across boreal forests of North America, Europe, and Asia. Winters on coasts and large rivers south to the Mediterranean and South Asia.
保全状況
Mandarin Duck
Goosander
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
Goosander
Male has dark green iridescent head, salmon-pink suffused white body, and black back; red serrated bill. Female has rufous-brown head with neat white chin patch, grey body, and pinkish-buff breast.
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。
Goosander
カワアイサはユーラシアと北米の淡水域に広く分布する大型の潜水性カモです。雄は緑色の頭部と白い体、赤い鋸状の嘴が特徴的です。日本では冬鳥として全国の河川や湖に飛来します。魚を潜って捕食します。木の洞や岩の割れ目に営巣します。