Yellow-billed Duck
Anas undulata
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The bright yellow bill, marked with a black central stripe, is the field mark that names the Yellow-billed Duck (Anas undulata) and separates it at a glance from other African dabbling ducks. The body is brown with pale-edged, scaly-looking feathering, the head browner with a paler face and throat, and the speculum iridescent green and black with white borders; sexes are alike. Freshwater lakes, rivers, marshes and dams across eastern and southern Africa hold the species, from Ethiopia and Uganda south to the Cape, and it tolerates agricultural impoundments and urban wetlands readily. Birds are largely sedentary and often gather in groups near reed beds. Clutches hold four to twelve eggs. The IUCN Red List rates it Least Concern.
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について
イエローカモはアフリカ東南部に生息するカモで、黄色い嘴が最大の特徴です。内陸の湖、沼地、川、ダムに生息し、水草、種子、無脊椎動物などを採食します。通常は小さな群れを作りますが、乾燥期には数百羽の大群になることもあります。
Physical Description
| Measurement | Value | Imperial |
|---|---|---|
| 翼開長 | 48.1 cm | 18.9 in |
| 体重 | 907.6666666666666 g | 32.02 oz |
識別
羽毛
Brown body with scaly pale-edged feathers; head brown with paler face and throat. Diagnostic bright yellow bill with black central stripe. Iridescent green-and-black speculum with white borders. Sexes similar.
Habitat & Range
Freshwater lakes, rivers, marshes, and dams across eastern and southern Africa from Ethiopia and Uganda south to the Cape. Tolerates agricultural impoundments and urban wetlands. Largely sedentary.
分布域
Found across sub-Saharan Africa from Senegal to Ethiopia and south to South Africa. Sedentary in freshwater wetlands.
Diet & Feeding
Dives for fish, frogs, and aquatic invertebrates; uses serrated bill to grip prey; diet shifts toward fish in colder months.
保全状況
行動と繁殖
営巣
Incubation: 26-30 days. Fledging: 68 days.
一腹卵数
4-12
鳴き声
さえずり
Female gives a loud, descending quacking series; male utters a soft, raspy rehb note. The female's strong quacking call is the dominant sound at sub-Saharan African wetlands.
分類学
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Aves |
| 目 | Anseriformes (Waterfowl) |
| 科 | Anatidae (Ducks, Geese & Swans) |
| Genus | Anas |
| 種 | Anas undulata |
Distribution
Yellow-billed Duck has been recorded in 5 countries.
countries highlighted
External Databases
よくある質問
What does the Yellow-billed Duck eat?
Where does the Yellow-billed Duck live?
Is the Yellow-billed Duck endangered?
How does the Yellow-billed Duck nest?
What does the Yellow-billed Duck sound like?
How big is the Yellow-billed Duck?
What order and family does the Yellow-billed Duck belong to?
Similar Birds
Other species in the Anatidae family