Philippine Duck vs Brent Goose
Anas luzonica 对比 Branta bernicla
Side-by-Side Comparison
| 属性 | Philippine Duck | Brent Goose |
|---|---|---|
| 学名 | Anas luzonica | Branta bernicla |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 47.4 cm (18.7 in) | 63.9 cm (25.2 in) |
| 体重 | 850.1666666666666 g (29.99 oz) | 1335.0 g (47.09 oz) |
| 食性 | Dives for fish in fast Andean rivers; strong swimmer; serrated bill grips slippery prey; diet … | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … |
| 产卵数 | 7-16 | 1-10 |
| Population Trend | — | — |
Habitat Comparison
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.
Brent Goose
Breeds on high-Arctic tundra; winters on estuaries, coastal mudflats, saltmarshes, and sea-grass beds along Atlantic and Pacific coastlines. One of the most strictly coastal wintering geese.
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.
Brent Goose
A low, guttural 'rronk' or 'ronk-ronk' from flocks. Soft nasal calls in feeding groups. A subtle, understated call for a goose — less loud than most Anser geese.
Geographic Range & Migration
Philippine Duck
Found from Morocco and sub-Saharan Africa through the Middle East to South Asia. Largely sedentary in freshwater habitats.
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
保护状况
Philippine Duck
Brent Goose
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.
Brent Goose
Small; mostly black head, neck, and breast. Small white neck-patch on adults. Back dark brownish-gray; belly pale gray to white depending on subspecies. White undertail coverts. Sexes similar.
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.
Brent Goose
黑雁是小型海雁，繁殖于北极苔原，越冬于温带沿海地区。全身黑色，颈部有白色斑纹，腹部浅色或深色（因亚种而异）。以海草（大叶藻）和潮间带植物为食，高度依赖沿海湿地。在欧洲和北美分布有多个亚种，其中部分亚种数量因大叶藻减少而受到威胁。