Lesser Scaup vs Spotted Whistling-duck
Aythya affinis comparado con Dendrocygna guttata
Side-by-Side Comparison
| Atributo | Lesser Scaup | Spotted Whistling-duck |
|---|---|---|
| Nombre científico | Aythya affinis | Dendrocygna guttata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 39,6 cm (15.6 in) | 41,3 cm (16.3 in) |
| Peso | 853,75 g (30.12 oz) | 677,5 g (23.90 oz) |
| Dieta | Dives for molluscs, crustaceans, and aquatic invertebrates in coastal habitats; hard-shelled benthic prey dominates diet. | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| Tamaño de la puesta | 6-14 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Lesser Scaup only
Ninguno
Spotted Whistling-duck only
Lesser Scaup
Breeds on boreal lakes, ponds, and wetlands in Canada and Alaska. Winters on large lakes, reservoirs, coastal bays, and freshwater across the southern United States, Mexico, and Central America. Often in large rafts.
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
Lesser Scaup
Male produces a soft, low purring call; female gives a harsh, nasal scaup sound. Voice nearly identical to Greater Scaup but slightly higher; flocks create a burbling, nasal chatter.
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
Lesser Scaup
Breeds in the forested interior of central Canada; winters on large lakes and rivers of the southeastern United States.
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
Lesser Scaup
Spotted Whistling-duck
How to Tell Them Apart
Lesser Scaup
Males have peaked purple-glossed black head; white flanks; black breast and undertail; gray back. Yellow eye. Smaller than Greater Scaup with peaked crown. Females dark brown with white face patch. …
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
Lesser Scaup
El porrón menor es uno de los patos buceadores más abundantes de América del Norte. El macho tiene la cabeza y el cuello de color morado-negro brillante con los flancos blancos, y es muy similar al porrón bastardo, del que se diferencia por la cabeza redondeada y por no tener el color gris en el dorso. Inverna en masas de agua abiertas en costas y grandes lagos interiores.
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.