Eastern Spot-billed Duck vs Spotted Whistling-duck
Anas zonorhyncha เปรียบเทียบกับ Dendrocygna guttata
Side-by-Side Comparison
| คุณสมบัติ | Eastern Spot-billed Duck | Spotted Whistling-duck |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Anas zonorhyncha | Dendrocygna guttata |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 53.6 cm (21.1 in) | 41.3 cm (16.3 in) |
| น้ำหนัก | 1017.5 g (35.89 oz) | 677.5 g (23.90 oz) |
| อาหาร | Eats fish, aquatic invertebrates, and amphibians; dives in freshwater rivers; serrated bill grips prey; fish … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| จำนวนไข่ | 7-9 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Eastern Spot-billed Duck only
ไม่มี
Spotted Whistling-duck only
Eastern Spot-billed Duck
Freshwater lakes, rivers, marshes, and rice paddies in northeastern Asia from eastern Russia and Siberia through China, Korea, and Japan. Winters in southern China and southern Japan.
Spotted Whistling-duck
Freshwater wetlands, rice fields, streams, and forest pools in New Guinea, Sulawesi, the Philippines, and Moluccas. Often found near forested rivers and seasonal swamps at low elevations.
Song & Call Comparison
Eastern Spot-billed Duck
Female produces a loud, descending quacking series; male gives a low, nasal grunt. Vocalizations closely resemble the Indian Spot-billed Duck; pairs call antiphonally on East Asian wetlands.
Spotted Whistling-duck
A musical, high whistle similar to other whistling-ducks. Call is softer and less far-carrying than White-faced or Black-bellied species. Given in flight and on water.
Geographic Range & Migration
Eastern Spot-billed Duck
Found in wetlands across Southeast Asia, from India to China, Vietnam, and Indonesia. Largely resident; local seasonal movements.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
สถานะการอนุรักษ์
Eastern Spot-billed Duck
Spotted Whistling-duck
How to Tell Them Apart
Eastern Spot-billed Duck
Brown body with pale buff face and throat; dark crown and eye stripe. Yellow-tipped black bill lacking the red spot of Indian Spot-billed Duck. Iridescent green speculum with white border. …
Spotted Whistling-duck
Dark brown above; head and neck dark brown. Underparts heavily spotted white on dark brown ground, giving spotted appearance. Flanks with bold white spots. Pink-red bill and legs. Sexes similar.
About These Birds
Eastern Spot-billed Duck
A large brown dabbling duck with a yellow-tipped black bill, without the red spot of its Indian relative, and a green speculum. Found across northeastern Asia. Partially migratory; breeds in northern China, Korea, and Siberia; winters farther south and east.
Spotted Whistling-duck
A small dark brown whistling-duck with bold white spots on its flanks, orange-red bill and legs, and a pale face. Found in tropical wetlands of New Guinea, the Philippines, and Indonesia. Often found near freshwater streams and flooded grassland. Less gregarious than other whistling-ducks.