Upland Goose vs Black-headed Duck
Chloephaga picta 비교 대상 Heteronetta atricapilla
Side-by-Side Comparison
| 속성 | Upland Goose | Black-headed Duck |
|---|---|---|
| 학명 | Chloephaga picta | Heteronetta atricapilla |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 82.4 cm (32.4 in) | 34.7 cm (13.7 in) |
| 체중 | 2916.0 g (102.86 oz) | 528.5 g (18.64 oz) |
| 식성 | Grazes grasses and sedges; dabbles for aquatic invertebrates; diet shifts between plant-heavy and invertebrate-heavy phases. | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| 산란 수 | 5-8 | 2 |
| Population Trend | — | — |
Habitat Comparison
Upland Goose
Open Patagonian grasslands, steppe, and agricultural pastures in southern Chile and Argentina, including the Falkland Islands. Grazes on short grass. Males aggressively defend territories. Partially migratory.
Song & Call Comparison
Upland Goose
Male gives a high, whistled 'whew'; female gives a low, rolling cackle 'ga-ga-ga'. Sexual differences in call are pronounced. Falklands and Patagonian populations highly vocal.
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
Upland Goose
Endemic to New Caledonia and its surrounding islands. Confined to dense rainforest; non-migratory and terrestrial year-round.
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
Upland Goose
Black-headed Duck
How to Tell Them Apart
Upland Goose
Pronounced dimorphism. Males white with black-barred flanks and white wings with black primaries. Females rufous-brown with black-barred flanks and white belly. Both sexes yellow-orange legs. Grassland species.
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
Upland Goose
강한 성별 이형을 가진 대형 쉘드거위: 수컷은 흰색에 검은 등 줄무늬; 암컷은 갈색-흰색 줄무늬. 파타고니아와 포클랜드 제도 서식. 초식성.
Black-headed Duck
검은머리오리(Heteronetta atricapilla)는 남아메리카산 약 530g의 소형 잠수 오리로, 오리과의 유일한 탁란성 종이다. 다른 수조류 둥지에 알을 낳는다.