Greater White-fronted Goose vs New Zealand Merganser
Anser albifrons 비교 대상 Mergus australis
Side-by-Side Comparison
| 속성 | Greater White-fronted Goose | New Zealand Merganser |
|---|---|---|
| 학명 | Anser albifrons | Mergus australis |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Extinct |
| 체장 | — | — |
| 날개 폭 | 81.6 cm (32.1 in) | — |
| 체중 | 2471.0 g (87.16 oz) | 898.0 g (31.68 oz) |
| 식성 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Extinct; historically dived for fish and aquatic invertebrates in New Zealand freshwater streams. Diet inferred … |
| 산란 수 | 3-9 | -- |
| Population Trend | — | — |
Habitat Comparison
공유 서식지
Greater White-fronted Goose only
New Zealand Merganser only
없음
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
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.
New Zealand Merganser
Extinct (EX). No recordings exist. This flightless New Zealand merganser likely gave grunting, nasal calls similar to the Red-breasted Merganser based on skull morphology and taxonomy.
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.
New Zealand Merganser
Formerly endemic to South Island and Stewart Island, New Zealand. Extinct since the 1900s.
보전 상태
Greater White-fronted Goose
New Zealand Merganser
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 …
New Zealand Merganser
Both sexes were dark brown overall; male had greenish-black gloss on head with slight crest, whitish barring on wings; female paler brown with rufous-tinged head and whitish throat.
About These Birds
Greater White-fronted Goose
흰이마기러기는 북극 툰드라에서 번식하고 온대 지역에서 월동하는 기러기입니다. 성체의 흰 이마와 오렌지색 다리가 특징이며, 농경지와 초원에서 풀과 곡물을 먹습니다.
New Zealand Merganser
중형 오리로 체장 약 55cm이며, 갈색과 흰색이었다. 뉴질랜드 오클랜드 제도에 서식하던 종으로 1902년경 멸종하였다. 잠수하여 어류와 수생 무척추동물을 먹었을 것으로 추정된다. 멸종 종이다.