Philippine Duck vs American Black Duck
Anas luzonica в сравнении с Anas rubripes
Side-by-Side Comparison
| Характеристика | Philippine Duck | American Black Duck |
|---|---|---|
| Научное название | Anas luzonica | Anas rubripes |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Vulnerable | Least Concern |
| Длина | — | — |
| Размах крыльев | 47,4 cm (18.7 in) | 53,4 cm (21.0 in) |
| Масса | 850,1666666666666 g (29.99 oz) | 1211,25 g (42.73 oz) |
| Питание | Dives for fish in fast Andean rivers; strong swimmer; serrated bill grips slippery prey; diet … | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … |
| Размер кладки | 7-16 | 1-17 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Philippine Duck only
Нет
American Black Duck only
Philippine Duck
Freshwater lakes, rivers, marshes, mangroves, and rice paddies across the Philippine archipelago. Primarily in lowland and foothill areas below 2,500 m. Threatened by hunting and wetland conversion.
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
Philippine Duck
Female gives a loud, descending quacking series; male produces a soft, nasal note. Strong quacking calls echo across Philippine wetlands; alarm is a rapid, emphatic quacking burst.
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
Philippine Duck
Found from Morocco and sub-Saharan Africa through the Middle East to South Asia. Largely sedentary in freshwater habitats.
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Охранный статус
Philippine Duck
American Black Duck
How to Tell Them Apart
Philippine Duck
Cinnamon-buff head and neck; dark brown-black crown and eye stripe conspicuous. Body grayish-brown with darker back. Iridescent green speculum. Blue-gray bill; orange legs. Sexes similar. Philippine endemic.
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
Philippine Duck
A medium-sized duck with a distinctive rufous head and neck, grey-brown body, and blue-green speculum. Endemic to the Philippines. Listed as Vulnerable; threatened by hunting and wetland degradation. Found in a range of lowland freshwater habitats across the Philippines.
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.