Greater White-fronted Goose vs Ringed Teal
Anser albifrons 比較対象 Callonetta leucophrys
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | Ringed Teal |
|---|---|---|
| 学名 | Anser albifrons | Callonetta leucophrys |
| 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) | 33.8 cm (13.3 in) |
| 体重 | 2471.0 g (87.16 oz) | 345.0 g (12.17 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Eats seeds, plant material, and aquatic invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 一腹卵数 | 3-9 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
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.
Ringed Teal
Subtropical forests, gallery woodlands, and wooded wetland margins in Bolivia, Brazil, Paraguay, Uruguay, and northeastern Argentina. Nests in tree hollows near water. Requires forested streams and rivers.
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.
Ringed Teal
Male utters a soft, high-pitched squeak; female gives a low, grunting kow note. Courtship involves quiet twittering exchanges between pairs in South American gallery forests.
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.
Ringed Teal
Breeds in the southern Palearctic from the Iberian Peninsula to Central Asia; winters mainly in sub-Saharan Africa.
保全状況
Greater White-fronted Goose
Ringed Teal
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 …
Ringed Teal
Males have gray head with black crown; pink breast with black spots; chestnut back; buff-white flanks with fine barring. White facial blaze. Females brown with pale supercilium and white spots …
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。
Ringed Teal
リングテールダックは南米のグラン・チャコ地方を中心に分布するカモです。白い眉斑と橙色の嘴が特徴的です。草地の池、川沿いの湿地、半乾燥地帯の水辺に生息し、水草、種子、無脊椎動物を採食します。