Mauritius Shelduck vs Greater White-fronted Goose
Alopochen mauritiana 对比 Anser albifrons
Side-by-Side Comparison
| 属性 | Mauritius Shelduck | Greater White-fronted Goose |
|---|---|---|
| 学名 | Alopochen mauritiana | Anser albifrons |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Extinct | Least Concern |
| 体长 | — | — |
| 翼展 | — | 81.6 cm (32.1 in) |
| 体重 | — | 2471.0 g (87.16 oz) |
| 食性 | Extinct Mauritius shelduck; likely grazed on grasses and aquatic plants near wetlands; diet inferred from … | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … |
| 产卵数 | -- | 3-9 |
| Population Trend | — | — |
Habitat Comparison
Mauritius Shelduck
Historically inhabited wetlands, rivers, and lowland areas of Mauritius. Now extinct; last records from the early colonial period.
Greater White-fronted Goose
Breeds on Arctic and subarctic tundra and peatlands. Winters on estuaries, agricultural fields, freshwater marshes, and flooded meadows across Europe, Asia, and North America. One of the most widespread geese.
Song & Call Comparison
Mauritius Shelduck
Extinct (EX); no vocalizations documented. The Mauritius Shelduck was last seen in the 1690s. Any description would be speculative given total absence of written records.
Greater White-fronted Goose
A loud, laughing 'kow-lyuk' or musical 'wah-wah'. Gives a distinctive high-pitched yodeling quality lacking in Greylag. Highly vocal in large winter flocks.
Geographic Range & Migration
Mauritius Shelduck
Formerly endemic to Mauritius, Indian Ocean. Extinct; known only from 17th-century accounts and subfossil bones found on the island.
Greater White-fronted Goose
Breeds in the potholes region of the northern Great Plains; winters in the southern United States and along the Gulf Coast.
保护状况
Mauritius Shelduck
Greater White-fronted Goose
How to Tell Them Apart
Mauritius Shelduck
Extinct Mascarene shelduck known only from fossil and subfossil remains. Likely brownish plumage similar to Egyptian Goose relatives; presumed sexual dimorphism. Extinct by late 17th century.
Greater White-fronted Goose
Brown-gray body with white forehead patch bordered by white band at bill base. Underparts with bold irregular black bars on belly. Orange bill; orange-yellow legs. Juveniles lack white front and …
About These Birds
Mauritius Shelduck
毛里求斯麻鸭（Alopochen mauritiana）是一种曾特产于毛里求斯的已灭绝麻鸭。属鸭科（Anatidae），仅凭亚化石骨骼和历史记录得知，与留尼汪麻鸭同为印度洋岛屿上人类活动导致灭绝的水禽。
Greater White-fronted Goose
A medium-large goose with a white forehead patch, orange bill, grey-brown plumage, and variable black barring on the belly. Widespread and numerous; one of the most abundant geese in the world. Breeds across the high Arctic; winters in a wide range of temperate wetland and agricultural habitats.