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Hawaiian Duck

Anas wyvilliana

Vulnerable

Flügelspannweite

44,0 cm

Gewicht

573,25 g

Familie

Anatidae

Ordnung

Anseriformes

Über uns

A medium-sized duck resembling a female Mallard, with mottled brown plumage and green speculum. Endemic to Hawaii; hybridizes with feral Mallards, threatening its genetic integrity. Found on freshwater wetlands of Kauai and other islands. Endangered; conservation focus on reducing hybridization.

Physical Description

Measurement	Value	Imperial
Flügelspannweite	44,0 cm	17.3 in
Gewicht	573,25 g	20.22 oz

Identifizierung

Gefieder

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.

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Geografisches Verbreitungsgebiet

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.

Erhaltungsstatus

Vulnerable

IUCN Red List

Verhalten & Brutverhalten

Nistverhalten

Nest type: HC.

Gelegegröße

9-13

Lautgebung

Gesang

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.

Taxonomie

Kingdom	Animalia
Phylum	Chordata
Class	Aves
Ordnung	Anseriformes (Wasservögel)
Familie	Anatidae (Enten, Gänse und Schwäne)
Genus	Anas
Arten	Anas wyvilliana

Distribution

Hawaiian Duck has been recorded in 5 countries.

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Vorhanden Not recorded

countries highlighted

🇧🇪 Belgien 🇫🇷 Frankreich 🇳🇱 Niederlande 🇳🇴 Norwegen 🇬🇧 Vereinigtes Königreich

External Databases

Häufig gestellte Fragen

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.