Coscoroba Swan vs Spotted Whistling-duck
Coscoroba coscoroba comparado con Dendrocygna guttata
Side-by-Side Comparison
| Atributo | Coscoroba Swan | Spotted Whistling-duck |
|---|---|---|
| Nombre científico | Coscoroba coscoroba | Dendrocygna guttata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 84,2 cm (33.1 in) | 41,3 cm (16.3 in) |
| Peso | 4200,0 g (148.15 oz) | 677,5 g (23.90 oz) |
| Dieta | Eats seeds, aquatic plants, and invertebrates; dabbles and upends in shallow water; diet more invertebrate-heavy … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| Tamaño de la puesta | 4-9 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Coscoroba Swan only
Ninguno
Spotted Whistling-duck only
Coscoroba Swan
Freshwater lakes, marshes, lagoons, and flooded grasslands from southern Brazil through Uruguay, Chile, and Argentina to Tierra del Fuego. Partially migratory; moves northward in winter. Nests in reedy margins.
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
Coscoroba Swan
A bugling, honking 'coscoroba' call — giving the species its onomatopoeic name. Loud and far-carrying. Less commonly heard than northern hemisphere swans.
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
Coscoroba Swan
Breeds in western North American prairies and parklands; winters in California, the Southwest, and northern Mexico.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Estado de conservación
Coscoroba Swan
Spotted Whistling-duck
How to Tell Them Apart
Coscoroba Swan
Entirely white plumage except black wingtips visible in flight. Bright red bill and red legs and feet. Red eye-ring. More goose-like than true swans. Juvenile has brownish wash. Sexes similar.
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
Coscoroba Swan
El coscorobo es un cisne blanco pequeño de América del Sur con el pico y las patas de color rojo-naranja. A pesar de su aspecto similar al de un cisne, no está estrechamente emparentado con los cisnes verdaderos; los estudios genéticos sugieren que su pariente más próximo es el ganso de Nueva Holanda de Australia. Habita en humedales de Chile, Argentina, Uruguay y sur de Brasil.
Spotted Whistling-duck
El pato silbador moteado es un pato silbador de Indonesia, Filipinas y Nueva Guinea, fácilmente reconocible por el plumaje marrón oscuro con manchas blancas en los flancos. Habita en bosques húmedos tropicales con estanques, pantanos y arrozales. Como todos los patos silbadores, tiene un llamado silbante característico y postura erguida. Está clasificado como casi amenazado.