Canvasback vs Mallard
Aythya valisineria comparado com Anas platyrhynchos
Side-by-Side Comparison
| Atributo | Canvasback | Mallard |
|---|---|---|
| Nome científico | Aythya valisineria | Anas platyrhynchos |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | 58,0 cm (22.8 in) |
| Envergadura | 44,7 cm (17.6 in) | 90,0 cm (35.4 in) |
| Peso | 1223,25 g (43.15 oz) | 1100,0 g (38.80 oz) |
| Dieta | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet dominated by … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| Tamanho da postura | 2-16 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Canvasback
Breeds on prairie potholes and boreal lakes across western North America. Winters on large open lakes, reservoirs, estuaries, and Chesapeake Bay. Sensitive to loss of prairie wetlands.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
Canvasback
Male produces a low, cooing purr; female gives a harsh, rolling quacking series. Males whisper-call in rolling, cooing notes during courtship; female's harsh quacking is emphatic on North American marshes.
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.
Geographic Range & Migration
Canvasback
Breeds in wooded wetlands of Canada and the northern United States; winters in the southern US and Central America.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Estado de conservação
Canvasback
Mallard
How to Tell Them Apart
Canvasback
Males have rich chestnut-red head and neck; black breast; pale canvas-gray body; white flanks. Sloping forehead profile with dark red bill and red eye. Females gray-brown with reddish-brown head. Dimorphic …
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
About These Birds
Canvasback
O pato-de-cabeça-vermelha americano é um grande pato mergulhador que cria nos pântanos de tufo das pradarias e tundra da América do Norte. Os machos têm cabeça ruiva, peito preto e dorso cinzento. Hiberna em zonas costeiras e grandes lagos. Alimenta-se principalmente de plantas aquáticas, especialmente erva da Chesapeake nas suas zonas de hibernação. É um pato cinegético popular, embora as populações tenham sofrido declínios históricos.
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.