Hawaiian Goose vs Spotted Whistling-duck
Branta sandvicensis comparado con Dendrocygna guttata
Side-by-Side Comparison
| Atributo | Hawaiian Goose | Spotted Whistling-duck |
|---|---|---|
| Nombre científico | Branta sandvicensis | Dendrocygna guttata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Near Threatened | Least Concern |
| Longitud | — | — |
| Envergadura | 72,8 cm (28.7 in) | 41,3 cm (16.3 in) |
| Peso | 2150,0 g (75.84 oz) | 677,5 g (23.90 oz) |
| Dieta | Eats aquatic plants, algae, and grasses; upends in shallow water to graze submerged vegetation; diet … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| Tamaño de la puesta | 1-6 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Hawaiian Goose only
Ninguno
Spotted Whistling-duck only
Hawaiian Goose
Volcanic slopes, lava flows, coastal grasslands, and shrublands on Maui, Hawai'i, and Kauai. Adapted to rocky terrain with reduced toe webbing. Introduced to other Hawaiian islands. Avoids dense forest.
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
Hawaiian Goose
A soft, low 'moo-moo' — the murmuring call gives the Nene its Hawaiian name. Also gives honking calls in flight. Less vocal than Canada Goose; distinctive murmuring quality.
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
Hawaiian Goose
Breeds in sub-Arctic Canada; winters on large lakes and rivers from the Gulf of Mexico north to where water remains open.
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
Hawaiian Goose
Spotted Whistling-duck
How to Tell Them Apart
Hawaiian Goose
Buff-tan neck with black and white channeled furrows. Crown and face black; hindneck black. Body gray-brown above; underparts pale with buff breast. Reduced webbing on feet. Sexes similar. State bird …
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
Hawaiian Goose
El ganso hawaiano o nene es el ganso endémico de las islas hawaianas y el ave oficial del estado de Hawaii. Tiene las patas con los dedos en parte sin membrana, lo que es una adaptación para caminar sobre las lavas volcánicas. Estuvo casi extinguido a mediados del siglo XX con sólo 30 individuos supervivientes, pero se ha recuperado gracias a la cría en cautiverio y la reintroducción.
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.