Mallard vs White-backed Duck
Anas platyrhynchos в сравнении с Thalassornis leuconotus
Side-by-Side Comparison
| Характеристика | Mallard | White-backed Duck |
|---|---|---|
| Научное название | Anas platyrhynchos | Thalassornis leuconotus |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | 58,0 cm (22.8 in) | — |
| Размах крыльев | 90,0 cm (35.4 in) | 33,3 cm (13.1 in) |
| Масса | 1100,0 g (38.80 oz) | 704,6666666666666 g (24.86 oz) |
| Питание | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … | -- |
| Размер кладки | 4-18 | 4-10 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
White-backed Duck
Freshwater lakes, ponds, and swamps with abundant floating aquatic vegetation, especially water lilies, in sub-Saharan Africa and Madagascar. Prefers shallow sheltered water with emergent vegetation for cover.
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.
White-backed Duck
Soft, low whistles and hissing sounds. The White-backed Duck is relatively quiet compared to whistling-ducks. Alarm call is a low 'peep'. Mostly heard at night.
Geographic Range & Migration
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
White-backed Duck
Охранный статус
Mallard
White-backed Duck
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
White-backed Duck
Heavily mottled and barred brown and buff overall. Diagnostic white back patch visible in flight. Head brown with whitish face and chin. Stiff tail held erect. Sexes similar; stiff-tail diving …
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.
White-backed Duck
A small compact brown-barred diving duck with a distinctive white back visible in flight and a large dark-blotched bill. Shy and easily overlooked among floating aquatic vegetation. An expert diver, feeding on water-lily seeds and tubers in African freshwater wetlands.