Greater White-fronted Goose vs Fulvous Whistling-duck
Anser albifrons 比較対象 Dendrocygna bicolor
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | Fulvous Whistling-duck |
|---|---|---|
| 学名 | Anser albifrons | Dendrocygna bicolor |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 81.6 cm (32.1 in) | 44.6 cm (17.6 in) |
| 体重 | 2471.0 g (87.16 oz) | 733.4 g (25.87 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Grazes grasses and sedges in Arctic tundra; large migratory goose; winter diet dominated by agricultural … |
| 一腹卵数 | 3-9 | 6-16 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Greater White-fronted Goose only
Fulvous Whistling-duck only
None
Greater White-fronted Goose
Breeds on Arctic and subarctic tundra and peatlands. Winters on estuaries, agricultural fields, freshwater marshes, and flooded meadows across Europe, Asia, and North America. One of the most widespread geese.
Fulvous Whistling-duck
Freshwater marshes, rice paddies, flooded fields, shallow lakes, and river margins across warm tropical and subtropical regions of the Americas, Africa, and South Asia. Highly nomadic, following rains.
Song & Call Comparison
Greater White-fronted Goose
A loud, laughing 'kow-lyuk' or musical 'wah-wah'. Gives a distinctive high-pitched yodeling quality lacking in Greylag. Highly vocal in large winter flocks.
Fulvous Whistling-duck
A soft, rhythmic 'ka-WHEE-00' whistle. Flocks give continuous soft whistling sounds during flight over tropical wetlands. Also gives shorter 'kee' contact notes.
Geographic Range & Migration
Greater White-fronted Goose
Breeds in the potholes region of the northern Great Plains; winters in the southern United States and along the Gulf Coast.
Fulvous Whistling-duck
Breeds across Eurasia from Iceland and western Europe to eastern Siberia; winters from Britain to the Mediterranean and South Asia.
保全状況
Greater White-fronted Goose
Fulvous Whistling-duck
How to Tell Them Apart
Greater White-fronted Goose
Brown-gray body with white forehead patch bordered by white band at bill base. Underparts with bold irregular black bars on belly. Orange bill; orange-yellow legs. Juveniles lack white front and …
Fulvous Whistling-duck
Warm fulvous-buff underparts with creamy white flank stripes. Upperparts dark brown with pale buff feather edges. Dark brown stripe down back of neck. Long bluish-gray legs. Sexes identical.
About These Birds
Greater White-fronted Goose
北極圏で繁殖し、温帯で越冬する大型のガン（体長64〜81cm）。成鳥は白い額と黒い腹部の横縞が特徴。Anser albifrons（マガン）は東アジア、ヨーロッパ、北米の広大な農地や湿地で越冬する。日本では宮城県伊豆沼などが重要な越冬地で、数万羽が集まる壮観な光景が見られる。Anatidae科。
Fulvous Whistling-duck
フルボーウィスリングダックはアフリカ、南アジア、アメリカに広く分布するツリーダックです。全身が栗褐色で、飛翔時に特徴的な笛のような鳴き声を発します。湿地、稲田、池に生息し、草の種子や水草を採食します。