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Hawaiian Duck

Anas wyvilliana

Vulnerable

翼開長

44.0 cm

体重

573.25 g

科

Anatidae

目

Anseriformes

On this page

について

ハワイガモはハワイ諸島固有の絶滅危惧種のカモです。マガモに近縁で、雄は緑色の頭部を持ちますが、より地味な外見をしています。湿地や川、池などに生息し、水生植物や無脊椎動物を食べます。外来捕食者や生息地の喪失が主な脅威となっています。

Physical Description

Measurement	Value	Imperial
翼開長	44.0 cm	17.3 in
体重	573.25 g	20.22 oz

識別

羽毛

Mottled brown plumage; males may show slight green gloss on head but reduced compared to Mallard. Iridescent blue-purple speculum with white borders. Orange bill. Females similar to males; pale buff supercilium.

Habitat & Range

Freshwater marshes, rivers, reservoirs, and taro fields on Kauai and other Hawaiian islands. Nests in dense vegetation near water. Threatened by hybridization with domestic or feral Mallards.

🌿 Wetland 🏖️ Coastal

分布域

Ranges across sub-Saharan Africa in open grasslands and wetland edges. Locally nomadic following seasonal rainfall patterns.

Diet & Feeding

Fish-diving duck of South American rivers; uses serrated bill to catch fish and aquatic invertebrates; diet mainly fish year-round.

保全状況

Vulnerable

IUCN Red List

行動と繁殖

営巣

Nest type: HC.

一腹卵数

9-13

鳴き声

さえずり

Female produces a raspy, descending quacking series; male gives a soft, nasal sound. Calls similar to Mallard but higher-pitched; alarm is a rapid-fire quacking rattle.

分類学

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

Distribution

Hawaiian Duck has been recorded in 5 countries.

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生息あり Not recorded

countries highlighted

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

External Databases

よくある質問

What does the Hawaiian Duck eat?

Fish-diving duck of South American rivers; uses serrated bill to catch fish and aquatic invertebrates; diet mainly fish year-round.

Where does the Hawaiian Duck live?

Freshwater marshes, rivers, reservoirs, and taro fields on Kauai and other Hawaiian islands. Nests in dense vegetation near water. Threatened by hybridization with domestic or feral Mallards.

Is the Hawaiian Duck endangered?

The Hawaiian Duck has a conservation status of Vulnerable.

How does the Hawaiian Duck nest?

Nest type: HC.

What does the Hawaiian Duck sound like?

Female produces a raspy, descending quacking series; male gives a soft, nasal sound. Calls similar to Mallard but higher-pitched; alarm is a rapid-fire quacking rattle.

How big is the Hawaiian Duck?

The Hawaiian Duck has a wingspan of 44.0 cm, weight of 573.25 g.

What order and family does the Hawaiian Duck belong to?

The Hawaiian Duck (Anas wyvilliana) belongs to the order Anseriformes and the family Anatidae.