Taiga Bean Goose vs Black-headed Duck
Anser fabalis 비교 대상 Heteronetta atricapilla
Side-by-Side Comparison
| 속성 | Taiga Bean Goose | Black-headed Duck |
|---|---|---|
| 학명 | Anser fabalis | Heteronetta atricapilla |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 89.7 cm (35.3 in) | 34.7 cm (13.7 in) |
| 체중 | 3115.0 g (109.88 oz) | 528.5 g (18.64 oz) |
| 식성 | Eats seeds, aquatic plants, and invertebrates; forages in shallow water and on land; diet varies … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| 산란 수 | 3-8 | 2 |
| Population Trend | — | — |
Habitat Comparison
Taiga Bean Goose
Breeds in taiga forest, boggy clearings, and river valleys across Scandinavia and northern Russia. Winters on agricultural fields, pastures, and river valleys in western and central Europe, particularly Belgium and the Netherlands.
Song & Call Comparison
Taiga Bean Goose
A low, nasal 'ung-unk' or 'ow' call — less nasal than Grey-lag. Flocks give continuous calling. The call distinction from Tundra Bean Goose is subtle but detectable.
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
Taiga Bean Goose
Breeds across Alaska and Canada; winters in the US interior and along coastlines south to the Gulf of Mexico.
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
Taiga Bean Goose
Black-headed Duck
How to Tell Them Apart
Taiga Bean Goose
Dark brown head and neck; back dark brown with pale feather edges giving scalloped appearance. Underparts pale gray-brown. Bill orange-yellow with black base and tip. Orange legs. Darker than Pink-footed …
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
Taiga Bean Goose
콩 기러기는 유라시아의 북부 타이가와 툰드라에서 번식하고 남쪽 유럽과 아시아에서 월동합니다. 두 가지 이하위종이 있으며, 오렌지색과 검은색 부리 무늬와 주황색 다리가 특징입니다.
Black-headed Duck
검은머리오리(Heteronetta atricapilla)는 남아메리카산 약 530g의 소형 잠수 오리로, 오리과의 유일한 탁란성 종이다. 다른 수조류 둥지에 알을 낳는다.