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Hawaiian Duck

Anas wyvilliana

Vulnerable

Chiều Dài Sải Cánh

44,0 cm

Khối Lượng

573,25 g

Họ

Anatidae

Bộ

Anseriformes

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Giới Thiệu

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
Chiều Dài Sải Cánh	44,0 cm	17.3 in
Khối Lượng	573,25 g	20.22 oz

Nhận Dạng

Bộ Lông

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

Phạm Vi Địa Lý

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.

Tình Trạng Bảo Tồn

Vulnerable

IUCN Red List

Hành Vi & Sinh Sản

Làm Tổ

Nest type: HC.

Số Trứng

9-13

Âm Thanh

Tiếng Hót

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.

Phân Loại Học

Kingdom	Animalia
Phylum	Chordata
Class	Aves
Bộ	Anseriformes (Waterfowl)
Họ	Anatidae (Ducks, Geese & Swans)
Genus	Anas
Loài	Anas wyvilliana

Distribution

Hawaiian Duck has been recorded in 5 countries.

{# Distribution Map — simplified SVG world map with highlighted countries. Expects `country_codes` variable: list of ISO alpha-2 codes (e.g. ["US", "CA", "MX"]). Uses Alpine.js to toggle classes on country paths. #}

Hiện Diện Not recorded

countries highlighted

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

External Databases

Câu Hỏi Thường Gặp

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.