American Black Duck vs Pink-eared Duck
Anas rubripes เปรียบเทียบกับ Malacorhynchus membranaceus
Side-by-Side Comparison
| คุณสมบัติ | American Black Duck | Pink-eared Duck |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Anas rubripes | Malacorhynchus membranaceus |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 53.4 cm (21.0 in) | 36.7 cm (14.4 in) |
| น้ำหนัก | 1211.25 g (42.73 oz) | 366.25 g (12.92 oz) |
| อาหาร | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Highly specialized filter-feeder; spatulate bill strains algae and zooplankton from turbid Australian floodwaters; tracks inland … |
| จำนวนไข่ | 1-17 | 6-8 |
| Population Trend | — | — |
Habitat Comparison
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American Black Duck only
Pink-eared Duck only
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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.
Pink-eared Duck
Ephemeral and permanent inland wetlands, flooded grasslands, and claypans across Australia. Highly nomadic, following unpredictable inland flooding. Most common in the Murray-Darling Basin in flood years.
Song & Call Comparison
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.
Pink-eared Duck
A soft, high-pitched rattling 'zarr-zarr' or reedy whistle. Considered a quiet duck. Calls while feeding in shallow Australian wetlands and flooded grasslands.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Pink-eared Duck
Breeds across Eurasia; winters across sub-Saharan Africa. One of the most widespread Palearctic–African long-distance migrants.
สถานะการอนุรักษ์
American Black Duck
Pink-eared Duck
How to Tell Them Apart
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 …
Pink-eared Duck
Pale gray-brown body with bold dark brown barring on flanks. Brown-streaked crown; white face with brown eye-patch. Tiny pink ear-spot behind eye. Wide gray spatulate bill. Striped flanks diagnostic. Sexes …
About These Birds
American Black Duck
A large dark brown dabbling duck closely resembling a very dark female Mallard, with purple speculum, yellowish-olive bill in males, and orange legs. Common in eastern North America. Hybridizes freely with Mallard; pure populations declining in the interior.
Pink-eared Duck
A small highly specialized duck with a large spatula-shaped bill for filter-feeding, grey-brown plumage with bold facial stripe, and a tiny pink patch behind the eye. Endemic to Australia. Highly nomadic; follows inland flooding. Expert filter-feeder on microscopic algae and invertebrates.