American Black Duck vs Hooded Merganser
Anas rubripes เปรียบเทียบกับ Lophodytes cucullatus
Side-by-Side Comparison
| คุณสมบัติ | American Black Duck | Hooded Merganser |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Anas rubripes | Lophodytes cucullatus |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 53.4 cm (21.0 in) | 37.3 cm (14.7 in) |
| น้ำหนัก | 1211.25 g (42.73 oz) | 638.0 g (22.50 oz) |
| อาหาร | -- | Dives for small fish, aquatic invertebrates, and frogs in clear freshwater streams and ponds. Uses … |
| จำนวนไข่ | 1-17 | 6-18 |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
American Black Duck only
Hooded Merganser 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.
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.
Hooded Merganser
Male produces a low, rolling rolling-tum tumbling call; female gives a harsh, grating quack. The male's frog-like rolling call is unique among North American ducks during winter courtship.
Geographic Range & Migration
American Black Duck
Hooded Merganser
Breeds in forested wetlands of North America from southern Canada to the northern United States. Winters on rivers and lakes south to Mexico.
สถานะการอนุรักษ์
American Black Duck
Hooded Merganser
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 …
Hooded Merganser
Male has fan-shaped black-and-white erectile crest; black head and neck, white breast with two black bars, rich cinnamon flanks. Female is greyish-brown with rusty-cinnamon crest, paler below.
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.
Hooded Merganser
A small fish-eating duck (~640 g) of family Anatidae, males bearing a dramatic fan-shaped black and white crest. Breeds in wooded swamps, rivers, and lakes in North America, nesting in tree cavities; winters on sheltered coastal and inland waters. Uses keen underwater vision to hunt fish and crayfish. Least Concern; benefiting from nest box programs.