Bar-headed Goose vs Wandering Whistling-duck
Anser indicus comparado com Dendrocygna arcuata
Side-by-Side Comparison
| Atributo | Bar-headed Goose | Wandering Whistling-duck |
|---|---|---|
| Nome científico | Anser indicus | Dendrocygna arcuata |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 87,6 cm (34.5 in) | 37,2 cm (14.6 in) |
| Peso | 2288,0 g (80.71 oz) | 779,5 g (27.50 oz) |
| Dieta | Eats aquatic plants, grasses, and roots; filters invertebrates during breeding; forms large flocks on shallow … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| Tamanho da postura | 3-8 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Bar-headed Goose only
Wandering Whistling-duck only
Nenhum
Bar-headed Goose
Breeds on high-altitude lakes and rivers at 4,000–5,000 m in Central Asia (Tibet, Mongolia, Ladakh). Migrates over the Himalayas. Winters on rivers, lakes, and agricultural fields in the Indian subcontinent.
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
Song & Call Comparison
Bar-headed Goose
A nasal, goose-like honking 'wang-wang-wang'. Flocks give persistent calling during high-altitude Himalayan migration — among the highest migrations of any bird species.
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
Geographic Range & Migration
Bar-headed Goose
Breeds in high Arctic of Greenland, Canada, and Alaska; winters on rocky coasts of eastern North America and western Europe.
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
Estado de conservação
Bar-headed Goose
Wandering Whistling-duck
How to Tell Them Apart
Bar-headed Goose
White head with two distinctive black bars across crown. Yellow-orange bill and legs. Back and wings pale gray; underparts white. Black-tipped primaries. Sexes similar; famed for Himalayan migration.
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. Sexes similar.
About These Birds
Bar-headed Goose
O ganso-de-cabeça-listrada é famoso pelas suas extraordinárias migrações de alta altitude sobre o Himalaia, atingindo elevações de mais de 7.000 metros. É facilmente identificado pelas duas listras pretas características na cabeça branca. Cria em lagos de alta altitude no Tibete, Mongólia e países adjacentes. Hiberna nas planícies do subcontinente indiano. Tem fisiologia especialmente adaptada para respirar em altitudes extremas com hemoglobina que tem maior afinidade pelo oxigénio.
Wandering Whistling-duck
O parreco-vagabundo é um pato assobiadeiro encontrado da Indonésia e Filipinas à Austrália. Tem a coloração castanho-avermelhada típica dos parrecos com flancos largamente barrados de castanho-escuro e branco. Habita zonas húmidas de água doce, incluindo lagos, pântanos e planícies inundadas tropicais. É gregário e frequentemente mistura-se com outras espécies de parrecos. Os bandos podem ser muito numerosos durante as estações não reprodutoras.