New Zealand Scaup vs Wandering Whistling-duck
Aythya novaeseelandiae comparado con Dendrocygna arcuata
Side-by-Side Comparison
| Atributo | New Zealand Scaup | Wandering Whistling-duck |
|---|---|---|
| Nombre científico | Aythya novaeseelandiae | Dendrocygna arcuata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 35,4 cm (13.9 in) | 37,2 cm (14.6 in) |
| Peso | 645,5 g (22.77 oz) | 779,5 g (27.50 oz) |
| Dieta | -- | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| Tamaño de la puesta | 2-13 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
New Zealand Scaup only
Wandering Whistling-duck only
Ninguno
New Zealand Scaup
Deep freshwater lakes, reservoirs, and large rivers across both main islands of New Zealand, particularly on high-country glacial lakes. Dives to depths of over 3 m for food. Forms large flocks in winter.
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
New Zealand Scaup
Male produces a low, soft wheeze; female gives a short, harsh quack. Relatively quiet; subdued vocalizations suit this diving duck of deep, clear New Zealand lakes and reservoirs.
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
New Zealand Scaup
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 conservación
New Zealand Scaup
Wandering Whistling-duck
How to Tell Them Apart
New Zealand Scaup
Males entirely black with green iridescence on head; yellow eye; dark blue-gray bill. Females dark brown with white face patches around bill base. White wing stripe in flight. New Zealand …
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
New Zealand Scaup
El porrón de Nueva Zelanda o papango es un pato buceador endémico de Nueva Zelanda, donde está en peligro de extinción. El macho tiene los ojos amarillos y el plumaje oscuro negro-café; la hembra es marrón con mejillas blancas. Antiguamente más amplio en su distribución, hoy persiste principalmente en el lago Rotorua y otras zonas de la Isla del Norte, gracias a programas de recuperación activos.
Wandering Whistling-duck
El pato silbador vagabundo es un pato silbador de distribución amplia en las regiones tropicales de Asia y el Pacífico, desde Borneo e Indonesia hasta Nueva Guinea y Australia. Tiene plumaje castaño con blanco y negro en los flancos. Habita en humedales tropicales, pantanos, lagunas, estanques y arrozales. Es una especie nómada que sigue las lluvias en busca de humedales.