Indian Spot-billed Duck vs American Black Duck
Anas poecilorhyncha 비교 대상 Anas rubripes
Side-by-Side Comparison
| 속성 | Indian Spot-billed Duck | American Black Duck |
|---|---|---|
| 학명 | Anas poecilorhyncha | Anas rubripes |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 54.4 cm (21.4 in) | 53.4 cm (21.0 in) |
| 체중 | 1220.0 g (43.03 oz) | 1211.25 g (42.73 oz) |
| 식성 | Dives for fish and aquatic invertebrates in clear cold streams; serrated bill adapted for catching … | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … |
| 산란 수 | 6-12 | 1-17 |
| Population Trend | — | — |
Habitat Comparison
Indian Spot-billed Duck
Freshwater lakes, rivers, marshes, rice paddies, and tanks across the Indian subcontinent to Southeast Asia. Common near human habitation. Largely sedentary with some local seasonal movement.
American Black Duck
Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.
Song & Call Comparison
Indian Spot-billed Duck
Female gives a loud, emphatic quacking series; male produces a raspy rehb note. Calls are Mallard-like but slightly lower; flocks create a cacophonous quacking chorus on Indian lakes.
American Black Duck
Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.
Geographic Range & Migration
Indian Spot-billed Duck
Resident in freshwater lakes and rivers across Southeast Asia, from Myanmar to Indonesia and the Philippines.
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
보전 상태
Indian Spot-billed Duck
American Black Duck
How to Tell Them Apart
Indian Spot-billed Duck
Large brownish duck with pale face and distinctive yellow-tipped black bill with red basal spot. Dark cap and eye stripe. Iridescent green speculum with white border. White tertials visible at …
American Black Duck
Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …
About These Birds
Indian Spot-billed Duck
반점 부리 오리는 남아시아와 동아시아에 널리 분포하는 중간 크기의 오리입니다. 부리 끝의 노란 반점과 부리 기부의 붉은 반점이 특징이며, 습지와 호수에서 흔히 발견됩니다.
American Black Duck
아메리카 검정 오리는 북아메리카 동부에 서식하는 중간 크기의 오리로, 말라드와 매우 유사하지만 전체적으로 더 어둡고 뚜렷한 보라색 날개 거울을 가지고 있습니다.