Wandering Whistling-duck vs Green Pygmy-goose
Dendrocygna arcuata comparado com Nettapus pulchellus
Side-by-Side Comparison
| Atributo | Wandering Whistling-duck | Green Pygmy-goose |
|---|---|---|
| Nome científico | Dendrocygna arcuata | Nettapus pulchellus |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 37,2 cm (14.6 in) | 33,8 cm (13.3 in) |
| Peso | 779,5 g (27.50 oz) | 328,75 g (11.60 oz) |
| Dieta | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Eats seeds, aquatic plants, and invertebrates; dabbles in shallow fresh water; diet varies between seasons … |
| Tamanho da postura | 6-15 | 8-12 |
| Population Trend | — | — |
Habitat Comparison
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.
Green Pygmy-goose
Lily-covered tropical freshwater billabongs, lagoons, and seasonal floodplains in New Guinea and the tropical Top End of the Northern Territory and Queensland, Australia. Highly dependent on aquatic vegetation.
Song & Call Comparison
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.
Green Pygmy-goose
Male gives a high-pitched, melodic two-note whistle; female produces a quiet, nasal grunt. Courtship includes rapid chattering exchanges between paired birds on tropical lagoons.
Geographic Range & Migration
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
Green Pygmy-goose
Breeds across northern and central Eurasia; winters in tropical Africa and South Asia.
Estado de conservação
Wandering Whistling-duck
Green Pygmy-goose
How to Tell Them Apart
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.
Green Pygmy-goose
Males have dark green head and neck with white cheek patch; dark back; white underparts; flanks gray-green with fine barring. Females duller with brown cap and white face. White wing …
About These Birds
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.
Green Pygmy-goose
O pato-pigmeu-verde-anão é um pequeno pato encontrado na Nova Guiné, ilhas adjacentes e norte da Austrália. Os machos têm dorso verde-escuro iridescente marcante com colar branco e ventre branco. Habita zonas húmidas tropicais, especialmente lagoas e lagos com vegetação aquática flutuante abundante como lírios de água. É o menor pato da Austrália. Nidifica em ocos de árvore. Tem uma distribuição mais restrita do que o pato-pigmeu-do-algodão relacionado.