Spotted Whistling-duck vs Chiloe Wigeon
Dendrocygna guttata в сравнении с Mareca sibilatrix
Side-by-Side Comparison
| Характеристика | Spotted Whistling-duck | Chiloe Wigeon |
|---|---|---|
| Научное название | Dendrocygna guttata | Mareca sibilatrix |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 41,3 cm (16.3 in) | 49,0 cm (19.3 in) |
| Масса | 677,5 g (23.90 oz) | 922,8333333333334 g (32.55 oz) |
| Питание | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dabbles for seeds and aquatic invertebrates; diet varies between plant matter and invertebrates seasonally in … |
| Размер кладки | 10-11 | 2-13 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Spotted Whistling-duck only
Chiloe Wigeon only
Нет
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.
Chiloe Wigeon
Lakes, rivers, freshwater marshes, and coastal lagoons in southern South America from southern Peru and Bolivia south through Chile and Argentina to Tierra del Fuego and the Falkland Islands.
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.
Chiloe Wigeon
Male utters a short, melodious whistle; female gives a low purring note. Pairs and flocks call with clear piping exchanges across South American wetlands and coastal lagoons.
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.
Chiloe Wigeon
Found across Australia, New Guinea, Indonesia, and the Philippines. Nomadic in drier areas; resident in well-watered regions.
Охранный статус
Spotted Whistling-duck
Chiloe Wigeon
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.
Chiloe Wigeon
Iridescent dark green head with white forehead blaze. Black and white barred flanks; rufous breast; white belly. White forewing patch. Legs blue-gray. Females similar but duller. South American temperate species.
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.
Chiloe Wigeon
A large boldly patterned wigeon with a metallic green head, white face, black breast, grey flanks with white barring, and a bright orange-yellow bill. Endemic to southern South America. Highly territorial; pairs defend lake territories. Named for Chiloé Island in Chile.