Upland Goose vs Mallard
Chloephaga picta в сравнении с Anas platyrhynchos
Side-by-Side Comparison
| Характеристика | Upland Goose | Mallard |
|---|---|---|
| Научное название | Chloephaga picta | Anas platyrhynchos |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | 58,0 cm (22.8 in) |
| Размах крыльев | 82,4 cm (32.4 in) | 90,0 cm (35.4 in) |
| Масса | 2916,0 g (102.86 oz) | 1100,0 g (38.80 oz) |
| Питание | -- | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| Размер кладки | 5-8 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Upland Goose
Open Patagonian grasslands, steppe, and agricultural pastures in southern Chile and Argentina, including the Falkland Islands. Grazes on short grass. Males aggressively defend territories. Partially migratory.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
Upland Goose
Male gives a high, whistled 'whew'; female gives a low, rolling cackle 'ga-ga-ga'. Sexual differences in call are pronounced. Falklands and Patagonian populations highly vocal.
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
Upland Goose
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Охранный статус
Upland Goose
Mallard
How to Tell Them Apart
Upland Goose
Pronounced dimorphism. Males white with black-barred flanks and white wings with black primaries. Females rufous-brown with black-barred flanks and white belly. Both sexes yellow-orange legs. Grassland species.
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
Upland Goose
A large sheldgoose with strong sexual dimorphism: males are white with black back barring; females are warm brown with barred flanks. Common in Patagonian and Falkland Islands grasslands. Gregarious; forms large flocks outside breeding season. Grazes on short grass and agricultural land.
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.