Greylag Goose vs Black-headed Duck
Anser anser 비교 대상 Heteronetta atricapilla
Side-by-Side Comparison
| 속성 | Greylag Goose | Black-headed Duck |
|---|---|---|
| 학명 | Anser anser | Heteronetta atricapilla |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 87.1 cm (34.3 in) | 34.7 cm (13.7 in) |
| 체중 | 3297.5 g (116.32 oz) | 528.5 g (18.64 oz) |
| 식성 | Eats shoots, seeds, and aquatic plants; takes invertebrates in shallow water; diet varies between coastal … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| 산란 수 | 3-12 | 2 |
| Population Trend | — | — |
Habitat Comparison
Greylag Goose
Breeds on moorland, bogs, freshwater wetlands, and lake margins across Eurasia from Iceland to central Asia. Winters on estuaries, agricultural fields, and wetlands. Feral populations year-round in parks.
Song & Call Comparison
Greylag Goose
A deep, loud 'aahng' honking. The ancestral goose of domesticated geese; its call is the template for the classic 'goose honk'. Flocks are highly vocal in flight.
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
Geographic Range & Migration
Greylag Goose
Breeds across central and northern North America; winters in the southern United States, Mexico, and Central America.
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
보전 상태
Greylag Goose
Black-headed Duck
How to Tell Them Apart
Greylag Goose
Large and heavy; uniformly gray-brown with pale feather fringes on back. Head and neck grayish-brown. Orange-pink bill; pink legs. Pale gray forewing conspicuous in flight. Ancestor of domestic geese.
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
About These Birds
Greylag Goose
회색 기러기는 유럽과 아시아에 널리 분포하는 기러기로, 가축 기러기의 주요 조상입니다. 회색 깃털과 분홍색 부리, 분홍색 다리가 특징이며, 호수, 강, 초원에서 서식합니다.
Black-headed Duck
검은머리오리(Heteronetta atricapilla)는 남아메리카산 약 530g의 소형 잠수 오리로, 오리과의 유일한 탁란성 종이다. 다른 수조류 둥지에 알을 낳는다.