Baer's Pochard vs Spotted Whistling-duck
Aythya baeri comparado con Dendrocygna guttata
Side-by-Side Comparison
| Atributo | Baer's Pochard | Spotted Whistling-duck |
|---|---|---|
| Nombre científico | Aythya baeri | Dendrocygna guttata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Critically Endangered | Least Concern |
| Longitud | — | — |
| Envergadura | 40,4 cm (15.9 in) | 41,3 cm (16.3 in) |
| Peso | 707,25 g (24.95 oz) | 677,5 g (23.90 oz) |
| Dieta | Dives for molluscs and aquatic invertebrates; diet dominated by hard-shelled benthic prey in coastal shallow-water … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| Tamaño de la puesta | 6-13 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Baer's Pochard only
Ninguno
Spotted Whistling-duck only
Baer's Pochard
Breeds on lakes and rivers in boreal forests of eastern Siberia and northeastern China. Winters on freshwater lakes and wetlands in eastern and southeastern Asia. Critically Endangered; tiny remaining population.
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
Baer's Pochard
Male gives a low, grating wheeze; female produces a harsh quacking series. Calls resemble Tufted Duck but slightly softer; among the rarest duck calls in East Asia due to its …
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
Baer's Pochard
Breeds in Arctic Canada and Alaska; winters at sea off both US coasts and in the Great Lakes during migration.
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
Baer's Pochard
Spotted Whistling-duck
How to Tell Them Apart
Baer's Pochard
Males have dark glossy greenish-black head; chestnut breast; white flanks and undertail. White eye. Females brown with chestnut breast and pale face patch. White wing stripe in flight. Critically endangered …
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
Baer's Pochard
El porrón de Baer es una especie de pato buceador en peligro crítico de extinción que cría en el este de Siberia y el nordeste de China. El macho tiene la cabeza y el cuello de color verde-negro brillante con el ojo blanco. Su población ha colapsado en los últimos decenios hasta contar con sólo unos cientos de individuos, posiblemente debido a la pérdida de hábitat en sus cuarteles de invierno.
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.