Lesser White-fronted Goose vs Mandarin Duck
Anser erythropus 比較対象 Aix galericulata
Side-by-Side Comparison
| 属性 | Lesser White-fronted Goose | Mandarin Duck |
|---|---|---|
| 学名 | Anser erythropus | Aix galericulata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | 44.0 cm (17.3 in) |
| 翼開長 | 73.8 cm (29.1 in) | 70.0 cm (27.6 in) |
| 体重 | 1912.5 g (67.46 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 | 2-8 | 7-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Lesser White-fronted Goose
Breeds on low-arctic and subarctic willow scrub and tundra across northern Eurasia. Winters on agricultural steppes and wetlands in Azerbaijan, Iran, Greece, and eastern Asia. Mixes with White-fronted Goose flocks.
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
Lesser White-fronted Goose
A high-pitched, rapid 'yelp' — noticeably faster and higher than Greater White-fronted. VU status; its smaller size is reflected in higher-frequency calls.
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
Lesser White-fronted Goose
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
Lesser White-fronted Goose
Mandarin Duck
How to Tell Them Apart
Lesser White-fronted Goose
Similar to but smaller than Greater White-fronted Goose; more extensive white forehead reaching above eyes. Distinctive yellow eye-ring. Dark brown-gray body with black belly bars. Pink bill; orange legs.
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
Lesser White-fronted Goose
カリガネはシベリアの北極ツンドラに繁殖し、東欧から中央アジアで越冬するガンです。マガンに似ますが小型で、白い額がより広いです。草地、農地、湿地で採食します。個体数が少ない絶滅危惧種で、日本には稀に飛来します。
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。