Mallard vs Paradise Shelduck
Anas platyrhynchos comparado com Tadorna variegata
Side-by-Side Comparison
| Atributo | Mallard | Paradise Shelduck |
|---|---|---|
| Nome científico | Anas platyrhynchos | Tadorna variegata |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 58,0 cm (22.8 in) | — |
| Envergadura | 90,0 cm (35.4 in) | 70,2 cm (27.6 in) |
| Peso | 1100,0 g (38.80 oz) | 1569,5 g (55.36 oz) |
| Dieta | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … | Eats seeds, grasses, and aquatic invertebrates; grazes near water; dabbles in shallows; diet varies with … |
| Tamanho da postura | 4-18 | 5-15 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Paradise Shelduck
Open farmland, grassland, lake shores, riverbeds, and wetlands throughout both main islands of New Zealand. Nests in caves, burrows, hollow trees, and dense vegetation. Highly territorial in the breeding season.
Song & Call Comparison
Mallard
Female gives the classic 'quack-quack-quack', descending in pitch. Male utters soft nasal 'raeb-raeb'. Both give a high 'gag-gag-gag' when alarmed or taking flight.
Paradise Shelduck
Male gives a high-pitched whistle; female gives a loud, harsh cackling call 'rak-rak-rak'. New Zealand's only endemic shelduck; calls echoing in open farmland are distinctive.
Geographic Range & Migration
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Paradise Shelduck
Breeds in Eurasia from the UK to Siberia; winters across sub-Saharan Africa and the Indian subcontinent.
Estado de conservação
Mallard
Paradise Shelduck
How to Tell Them Apart
Mallard
Breeding males have an iridescent green head, white neck ring, chestnut breast, and grey body. Females are mottled brown. Both sexes show a blue speculum bordered by white.
Broad, flat bill — yellow-green in males, orange-brown in females
Paradise Shelduck
Extreme dimorphism. Males have black head with green gloss and black-and-chestnut body. Females have pure white head and neck contrasting with rich chestnut-rufous body. Both show white wing patches. New …
About These Birds
Mallard
The mallard is the ancestor of most domestic duck breeds and the most abundant and widespread dabbling duck in the world. Males perform elaborate courtship displays including head-bobbing and whistle-grunt calls. Mallards are highly adaptable, thriving in both wilderness and urban environments.
Paradise Shelduck
O pato-de-paradise é um pato-de-terra grande da Nova Zelândia com dimorfismo sexual marcante. Os machos têm cabeça e pescoço verdes brilhantes, peito castanho-avermelhado e corpo barrado de branco. As fêmeas têm cabeça e pescoço brancos e o corpo castanho. A espécie é ícone cultural dos Maoris onde é conhecida como pūtangitangi. Cria em prados e zonas húmidas de interior e é um dos patos mais comuns da Nova Zelândia. É altamente territorial.