Ashy-headed Goose vs Spotted Whistling-duck
Chloephaga poliocephala comparado com Dendrocygna guttata
Side-by-Side Comparison
| Atributo | Ashy-headed Goose | Spotted Whistling-duck |
|---|---|---|
| Nome científico | Chloephaga poliocephala | Dendrocygna guttata |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 69,1 cm (27.2 in) | 41,3 cm (16.3 in) |
| Peso | 1779,25 g (62.76 oz) | 677,5 g (23.90 oz) |
| Dieta | Eats grasses, seeds, and aquatic invertebrates; grazes upland pastures and dabbles in wetlands; diet varies … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| Tamanho da postura | 4-6 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Ashy-headed Goose only
Spotted Whistling-duck only
Nenhum
Ashy-headed Goose
Temperate forests, forest clearings, and lake margins in southern Chile and Patagonian Argentina. Partially migratory; breeds in beech forest zones and winters on open grasslands farther north.
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
Ashy-headed Goose
A whistled 'seeeeu' from males and a lower cackling from females. Ashy-headed Goose calls carry across Andean foothills and Patagonian grassland habitats.
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
Ashy-headed Goose
Inhabits wetlands and flooded grasslands across South and Southeast Asia, from India to Indonesia. Largely resident year-round.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Estado de conservação
Ashy-headed Goose
Spotted Whistling-duck
How to Tell Them Apart
Ashy-headed Goose
Gray head and neck contrast with chestnut breast and rufous-barred flanks. Back brown; belly white. White wing patch in flight with iridescent green speculum. Yellow-orange legs. Sexes similar but females …
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
Ashy-headed Goose
O ganso-de-cabeça-cinza é um ganso médio andino e patagónico do sul da América do Sul. Tem uma cabeça cinzento-pálida característica que contrasta com o corpo castanho-ruivo e as barras pretas e brancas nos flancos. Habita prados e zonas húmidas andinas e patagónicas, migrando para elevações inferiores no inverno. É frequentemente visto em pares ou pequenos grupos. Como outros gansos-da-patagónia, os pares mantêm ligações de longa duração.
Spotted Whistling-duck
O parreco-pintalgado é um pato assobiadeiro grande encontrado nas Filipinas, Indonésia e Papua Nova Guiné. Distingue-se pelos seus flancos e cobertura da cauda largamente com pintas brancas num fundo escuro. Tem pescoço escuro, coroa castanha e bico e pernas cinzentos. Habita zonas húmidas tropicais de baixa altitude, lagos e arrozais. Tem uma distribuição fragmentada e é classificado como quase ameaçado em algumas regiões.