Spotted Whistling-duck vs Falcated Duck
Dendrocygna guttata ile kıyaslandığında Mareca falcata
Side-by-Side Comparison
| Özellik | Spotted Whistling-duck | Falcated Duck |
|---|---|---|
| Bilimsel Ad | Dendrocygna guttata | Mareca falcata |
| Takım | Anseriformes | Anseriformes |
| Familya | Anatidae | Anatidae |
| Koruma Durumu | Least Concern | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 41,3 cm (16.3 in) | 47,7 cm (18.8 in) |
| Ağırlık | 677,5 g (23.90 oz) | 620,5 g (21.89 oz) |
| Beslenme | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Eats seeds, plant material, and aquatic invertebrates; filter-feeds in shallow water; omnivorous diet varies with … |
| Kuluçka Büyüklüğü | 10-11 | 6-10 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Spotted Whistling-duck only
Falcated Duck only
Hiçbiri
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.
Falcated Duck
Breeds along rivers and lake shores in Siberian taiga and meadows. Winters on freshwater lakes and rivers in China, Japan, and South Korea. Sensitive to hunting pressure and wetland drainage.
Song & Call Comparison
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.
Falcated Duck
Male gives a soft, whistled whi-ooo note; female produces a low, grunting quack. The male's haunting whistle is one of the more melodic sounds of East Asian wetlands in winter.
Geographic Range & Migration
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Falcated Duck
Nomadic across the interior wetlands of Australia; moves widely in response to flooding and drought conditions.
Koruma Durumu
Spotted Whistling-duck
Falcated Duck
How to Tell Them Apart
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.
Falcated Duck
Males have iridescent green-and-chestnut head with bushy drooping crest. Pale gray body with black and white breast band. Long, sickle-shaped tertials overhang tail. Females mottled brown. Spectacular dimorphism.
About These Birds
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.
Falcated Duck
An elegant duck. Males have a large chestnut-and-green crested head, long drooping tertial feathers, and finely vermiculated grey body. One of Asia's most beautiful ducks; declining due to hunting. Breeds in Siberia and northeastern Asia; winters in East and Southeast Asia.