Mauritius Shelduck vs American Black Duck
Alopochen mauritiana comparado com Anas rubripes
Side-by-Side Comparison
| Atributo | Mauritius Shelduck | American Black Duck |
|---|---|---|
| Nome científico | Alopochen mauritiana | Anas rubripes |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Extinct | Least Concern |
| Comprimento | — | — |
| Envergadura | — | 53,4 cm (21.0 in) |
| Peso | — | 1211,25 g (42.73 oz) |
| Dieta | Extinct Mauritius shelduck; likely grazed on grasses and aquatic plants near wetlands; diet inferred from … | -- |
| Tamanho da postura | -- | 1-17 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Mauritius Shelduck only
Nenhum
American Black Duck only
Mauritius Shelduck
Historically inhabited wetlands, rivers, and lowland areas of Mauritius. Now extinct; last records from the early colonial period.
American Black Duck
Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.
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.
American Black Duck
Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.
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.
American Black Duck
Estado de conservação
Mauritius Shelduck
American Black Duck
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.
American Black Duck
Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …
About These Birds
Mauritius Shelduck
An extinct shelduck formerly endemic to Mauritius. Known from subfossil bones and historical records from the 17th century. Likely resembled the Egyptian Goose. Went extinct after European colonization due to hunting and introduced predators. No description of living birds exists.
American Black Duck
O pato-negro americano é um pato dabbling robusto encontrado no leste da América do Norte. É estreitamente relacionado com o pato-real e os dois hybridizam extensivamente. Apresenta uma plumagem escura castanho-preta característica com cabeça mais pálida e espelhos violeta nas asas. Habita zonas húmidas costeiras e de interior, florestas e pradarias ao longo das regiões orientais. É uma espécie cinegética importante, mas as suas populações diminuíram devido à hibridização com patos-reais e perda de habitat.