Mallard vs Orinoco Goose
Anas platyrhynchos 对比 Neochen jubata
Side-by-Side Comparison
| 属性 | Mallard | Orinoco Goose |
|---|---|---|
| 学名 | Anas platyrhynchos | Neochen jubata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Near Threatened |
| 体长 | 58.0 cm (22.8 in) | — |
| 翼展 | 90.0 cm (35.4 in) | 59.6 cm (23.5 in) |
| 体重 | 1100.0 g (38.80 oz) | 1558.0 g (54.96 oz) |
| 食性 | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … | Eats grasses, seeds, and aquatic invertebrates; grazes wetland margins; takes molluscs and crustaceans in shallow … |
| 产卵数 | 4-18 | 6-10 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Orinoco Goose
Tropical rivers, river islands, sandy beaches, and adjacent gallery forest in the Amazon and Orinoco basins. Nests in tree cavities or on the ground near rivers. Associated with braided river channels.
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.
Orinoco Goose
A nasal 'honk-honk' call. Less frequently encountered than other South American waterfowl; calls from gallery forest beside major Orinoco tributaries during the breeding season.
Geographic Range & Migration
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Orinoco Goose
Bred on Amsterdam Island and possibly other sub-Antarctic islets. Extinct; flightless and confined to one small island.
保护状况
Mallard
Orinoco Goose
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
Orinoco Goose
Pale cream-buff head and neck; chestnut-brown breast and flanks. Back dark brown; belly pale cream. Wings with iridescent green speculum and white inner secondaries. Bill dark; legs reddish-orange. Sexes similar.
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.
Orinoco Goose
奥里诺科雁是南美洲北部特有的雁类，分布于奥里诺科河流域的委内瑞拉和哥伦比亚，以及亚马逊河上游地区。体型中等，体羽浅棕色，翼羽白色在飞行时明显，腿部橙红色。栖息于热带草原的河流和湖泊边缘，以草地植物为食。数量稀少，易受猎捕威胁。