Indian Spot-billed Duck vs Greater White-fronted Goose
Anas poecilorhyncha 比較対象 Anser albifrons
Side-by-Side Comparison
| 属性 | Indian Spot-billed Duck | Greater White-fronted Goose |
|---|---|---|
| 学名 | Anas poecilorhyncha | Anser albifrons |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 54.4 cm (21.4 in) | 81.6 cm (32.1 in) |
| 体重 | 1220.0 g (43.03 oz) | 2471.0 g (87.16 oz) |
| 食性 | Dives for fish and aquatic invertebrates in clear cold streams; serrated bill adapted for catching … | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … |
| 一腹卵数 | 6-12 | 3-9 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Indian Spot-billed Duck only
None
Greater White-fronted Goose only
Indian Spot-billed Duck
Freshwater lakes, rivers, marshes, rice paddies, and tanks across the Indian subcontinent to Southeast Asia. Common near human habitation. Largely sedentary with some local seasonal movement.
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.
Song & Call Comparison
Indian Spot-billed Duck
Female gives a loud, emphatic quacking series; male produces a raspy rehb note. Calls are Mallard-like but slightly lower; flocks create a cacophonous quacking chorus on Indian lakes.
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.
Geographic Range & Migration
Indian Spot-billed Duck
Resident in freshwater lakes and rivers across Southeast Asia, from Myanmar to Indonesia and the Philippines.
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.
保全状況
Indian Spot-billed Duck
Greater White-fronted Goose
How to Tell Them Apart
Indian Spot-billed Duck
Large brownish duck with pale face and distinctive yellow-tipped black bill with red basal spot. Dark cap and eye stripe. Iridescent green speculum with white border. White tertials visible at …
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 …
About These Birds
Indian Spot-billed Duck
ハシブトガモはインド亜大陸から中国、日本にかけて分布するカモです。嘴の先端が黄色く、赤いパッチがあるのが名前の由来です。湿地、稲田、川、湖に生息し、水草や農作物の種子なども採食します。日本では留鳥として全国的に見られます。
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。