Blue Duck vs Mandarin Duck
Hymenolaimus malacorhynchos comparado com Aix galericulata
Side-by-Side Comparison
| Atributo | Blue Duck | Mandarin Duck |
|---|---|---|
| Nome científico | Hymenolaimus malacorhynchos | Aix galericulata |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Endangered | Least Concern |
| Comprimento | — | 44,0 cm (17.3 in) |
| Envergadura | 45,6 cm (18.0 in) | 70,0 cm (27.6 in) |
| Peso | 861,75 g (30.40 oz) | 570,0 g (20.11 oz) |
| Dieta | -- | Seeds, acorns, grains, aquatic plants, insects, snails, and small fish. Forages by dabbling, walking, and … |
| Tamanho da postura | 5-6 | 7-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Blue Duck
Fast-flowing clear turbulent mountain rivers and streams in pristine native forest at 300–1,500 m in both main islands of New Zealand. Requires undisturbed riparian habitat with abundant aquatic invertebrates.
Mandarin Duck
Wooded lakes, rivers, and ponds surrounded by dense forest. Unlike most ducks, regularly perches in trees and nests in tree cavities.
Song & Call Comparison
Blue Duck
A soft, musical whistle from fast-flowing South Island rivers. Call is a clear 'whio' — giving the bird its Maori name. Also gives a soft, reedy 'squeak'. Endangered; rarely heard.
Mandarin Duck
Male gives a low whistled 'hib' or 'weep'. Female utters a soft quacking 'kek'. Generally quiet and secretive. No loud territorial song; vocalizations subtle and brief.
Geographic Range & Migration
Blue Duck
Mandarin Duck
Native to East Asia including eastern Russia, China, Japan, and Korea. Feral populations established in Britain and western Europe.
Estado de conservação
Blue Duck
Mandarin Duck
How to Tell Them Apart
Blue Duck
Distinctive slate-blue-gray plumage; breast spotted with chestnut-brown in both sexes. Pale bill with flexible pink lobes at tip. Chestnut eye. Sexes similar; adapted to fast-flowing mountain streams in New Zealand.
Mandarin Duck
Breeding males have an elaborate pattern of orange, green, white, and purple with distinctive orange sail feathers on the back. Females are grey-brown with a white eye-ring and stripe.
Small red bill in breeding males, pinkish in females
About These Birds
Blue Duck
O pato-azul da Nova Zelândia é um pato único e ameaçado encontrado em rios de montanha de correnteza rápida na Nova Zelândia. Tem plumagem cinzenta azulada com bico rosadinhas. Está altamente especializado para a vida em rios torrenciais de montanha. Alimenta-se de invertebrados aquáticos. As populações sofreram declínios severos devido a predadores introduzidos como furões, arminhões e ratos. Os esforços de conservação incluem programas de controlo de predadores e criação em cativeiro.
Mandarin Duck
The mandarin duck is widely considered the most beautiful duck in the world. In East Asian culture, mandarin ducks symbolize love and fidelity because they form strong pair bonds. Unlike most ducks, mandarins nest in tree holes up to 9 meters above the ground, and day-old ducklings must leap to the ground.