African Black Duck vs Northern Shoveler
Anas sparsa 比較対象 Spatula clypeata
Side-by-Side Comparison
| 属性 | African Black Duck | Northern Shoveler |
|---|---|---|
| 学名 | Anas sparsa | Spatula clypeata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 49.5 cm (19.5 in) | 45.3 cm (17.8 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 631.5 g (22.28 oz) |
| 食性 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Eats seeds, aquatic plants, and invertebrates; dabbles in wetlands; broadly omnivorous diet shifts with season … |
| 一腹卵数 | 4-9 | 5-14 |
| Population Trend | — | — |
Habitat Comparison
African Black Duck
Fast-flowing rocky rivers and streams, mountain gorges, and waterfalls from sea level to 4,000 m across sub-Saharan Africa from Ethiopia and Kenya south to the Cape. Requires clear turbulent water with boulders.
Northern Shoveler
Breeds on freshwater prairie ponds, marshes, and lake margins across Eurasia and North America. Winters on coastal lagoons, estuaries, freshwater lakes, and rice paddies in tropical and subtropical regions worldwide.
Song & Call Comparison
African Black Duck
Produces a harsh, resonant quacking call; alarm is a loud, emphatic quack repeated rapidly. Both sexes call with strong quacking; pairs duet with synchronized calls along African rivers.
Northern Shoveler
Male gives a low, hollow took-took call; female produces a laughing, descending quacking series. Courtship includes head-bobbing displays accompanied by quiet nasal grunting calls.
Geographic Range & Migration
African Black Duck
Resident across South and Southeast Asia, from India to southern China and the Philippines. Non-migratory in most of its range.
Northern Shoveler
Breeds across sub-Arctic and boreal Eurasia; winters from the British Isles to China, Japan, and Southeast Asia.
保全状況
African Black Duck
Northern Shoveler
How to Tell Them Apart
African Black Duck
Dark blackish-brown plumage with bold white spots on back and scapulars. Iridescent blue-green speculum with white borders. Head dark with pale spots. Bill and legs dark gray. Sexes similar. Fast-flowing …
Northern Shoveler
Breeding males have iridescent green head, white breast, and rufous-chestnut flanks. Yellow eye. Pale blue forewing and green speculum. Females mottled brown. Massive spatulate bill unique among ducks. Dimorphic.
About These Birds
African Black Duck
アフリカンブラックダックはサハラ以南のアフリカの急流河川に生息する特殊なカモです。暗褐色の羽毛と白い斑点が特徴で、水流の速い清澄な渓流を好みます。繁殖期には縄張り意識が強く、ペアで生活します。急流の水生昆虫や甲殻類を主食とします。
Northern Shoveler
A medium-sized duck with a dramatically large spatula-shaped bill perfectly adapted for filter-feeding. Males have an iridescent green head, white breast, chestnut flanks, and sky-blue wing patches. Highly migratory; one of the Northern Hemisphere's most widespread ducks.