Spotted Whistling-duck vs Brazilian Merganser
Dendrocygna guttata से तुलना Mergus octosetaceus
Side-by-Side Comparison
| विशेषता | Spotted Whistling-duck | Brazilian Merganser |
|---|---|---|
| वैज्ञानिक नाम | Dendrocygna guttata | Mergus octosetaceus |
| गण | Anseriformes | Anseriformes |
| कुल | Anatidae | Anatidae |
| संरक्षण स्थिति | Least Concern | Critically Endangered |
| लंबाई | — | — |
| पंखों का फैलाव | 41.3 cm (16.3 in) | 39.2 cm (15.4 in) |
| वजन | 677.5 g (23.90 oz) | 827.6666666666666 g (29.20 oz) |
| आहार | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for small fish in fast-flowing South American rivers. Critically endangered; uses serrated bill to … |
| अंडों की संख्या | 10-11 | 5-8 |
| Population Trend | — | — |
Habitat Comparison
साझा आवास
Spotted Whistling-duck only
Brazilian Merganser only
कोई नहीं
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
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.
Brazilian Merganser
Male produces a harsh, rasping call; female gives a guttural, grunting series. Critically endangered; quiet vocalizations suit its secretive lifestyle in fast-flowing Brazilian mountain rivers.
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.
Brazilian Merganser
Critically endangered; restricted to a few rivers in southern Brazil, Argentina, and Paraguay. Found on fast-flowing rivers in Atlantic Forest.
संरक्षण स्थिति
Spotted Whistling-duck
Brazilian Merganser
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.
Brazilian Merganser
Male has dark glossy greenish-black head with long shaggy crest; finely vermiculated grey body, white wing patch. Female similar but with rufous-chestnut wash on head and shorter crest.
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.
Brazilian Merganser
One of the world's rarest waterfowl (~830 g), family Anatidae, with a serrated bill and dark green head with bushy crest. Inhabits fast-flowing clear rivers in the Atlantic Forest of Brazil, Argentina, and Paraguay. Feeds on fish and aquatic invertebrates. Critically Endangered; fewer than 250 mature individuals remain due to dam construction and river degradation.