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Knob-billed Duck

Sarkidiornis melanotos

Least Concern

翼開長

64.2 cm

体重

1817.5 g

科

Anatidae

目

Anseriformes

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について

ノブビルダックはアフリカ、南アジア、南米に広く分布するカモです。雄の嘴の根元にある肉質のコブが特徴的です。木の洞に営巣し、湿地、川、池に生息します。季節的な移動をすることがあります。水草、種子、農作物を採食します。

Physical Description

Measurement	Value	Imperial
翼開長	64.2 cm	25.3 in
体重	1817.5 g	64.11 oz

識別

羽毛

Males have white head with black spots; iridescent dark blue-black back and wings; white underparts with gray flanks. Large black fleshy knob atop bill. Females smaller, brown, and lack the knob. African species.

Habitat & Range

Freshwater lakes, marshes, floodplains, and forested wetlands across sub-Saharan Africa and South and Southeast Asia from India to southern China. Nests in large tree hollows near water.

🌿 Wetland 🌾 Grassland

分布域

Breeds on sub-Arctic tundra; winters on the Atlantic coast of North America from Labrador to Florida and the Gulf Coast.

Diet & Feeding

Dabbles for seeds and aquatic invertebrates; diet shifts toward invertebrate prey in spring breeding season; widespread palearctic duck.

保全状況

Least Concern

IUCN Red List

行動と繁殖

営巣

Nest type: CV. Incubation: 28-30 days. Fledging: 70 days.

一腹卵数

6-20

鳴き声

さえずり

A low, grunting 'wuk' or soft, nasal 'krank'. Similar to Comb Duck in call quality. Generally quiet; calls are not loud or distinctive compared to other large African waterfowl.

分類学

Kingdom	Animalia
Phylum	Chordata
Class	Aves
目	Anseriformes (Waterfowl)
科	Anatidae (Ducks, Geese & Swans)
Genus	Sarkidiornis
種	Sarkidiornis melanotos

Distribution

Knob-billed Duck has been recorded in 7 countries.

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生息あり Not recorded

countries highlighted

🇧🇪 Belgium 🇫🇷 France 🇳🇱 Netherlands 🇳🇴 Norway 🇬🇧 United Kingdom 🇨🇴 Colombia 🇪🇨 Ecuador

External Databases

よくある質問

What does the Knob-billed Duck eat?

Dabbles for seeds and aquatic invertebrates; diet shifts toward invertebrate prey in spring breeding season; widespread palearctic duck.

Where does the Knob-billed Duck live?

Freshwater lakes, marshes, floodplains, and forested wetlands across sub-Saharan Africa and South and Southeast Asia from India to southern China. Nests in large tree hollows near water.

Is the Knob-billed Duck endangered?

The Knob-billed Duck has a conservation status of Least Concern.

How does the Knob-billed Duck nest?

Nest type: CV. Incubation: 28-30 days. Fledging: 70 days.

What does the Knob-billed Duck sound like?

A low, grunting 'wuk' or soft, nasal 'krank'. Similar to Comb Duck in call quality. Generally quiet; calls are not loud or distinctive compared to other large African waterfowl.

How big is the Knob-billed Duck?

The Knob-billed Duck has a wingspan of 64.2 cm, weight of 1817.5 g.

What order and family does the Knob-billed Duck belong to?

The Knob-billed Duck (Sarkidiornis melanotos) belongs to the order Anseriformes and the family Anatidae.