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Laysan Duck

Anas laysanensis

Critically Endangered

翼展

39.7 cm

体重

465.25 g

科

Anatidae

目

Anseriformes

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关于

莱岛鸭是世界上最濒危的鸭类之一，仅分布于夏威夷莱岛群岛的莱桑岛。这种小型鸭子由于长期与世隔绝，几乎完全失去了飞行能力。其种群曾一度减少至仅约12只，经过保护努力数量有所恢复。它主要以昆虫、无脊椎动物和藻类为食，面临外来物种入侵的严峻威胁。

Physical Description

Measurement	Value	Imperial
翼展	39.7 cm	15.6 in
体重	465.25 g	16.41 oz

识别

羽毛

Brown plumage mottled and streaked buff and dark brown. White eye-ring contrasts with dark face. Both sexes similar; females show reduced white eye ring. Iridescent speculum. Critically endangered; only on Laysan Atoll.

Habitat & Range

Restricted to Laysan Island and Midway Atoll in the Hawaiian Islands. Inhabits the central hypersaline lagoon and surrounding vegetation. Feeds on brine shrimp and flies around the lagoon margin.

🌿 Wetland 🌾 Grassland 🏖️ Coastal

分布范围

Resident in West Africa from Senegal to Nigeria; inhabits rainforest streams and swamps. Sedentary and locally common.

Diet & Feeding

Dives for small fish, aquatic invertebrates, and amphibians; serrated bill grips prey; diet fish-heavy in winter months.

保护状况

Critically Endangered

IUCN Red List

行为与繁殖

筑巢

Nest type: CP.

产卵数

9-13

声音

鸣唱

Female gives a soft, muffled quacking series; male utters a quiet rasp. Extremely rare; the soft, unobtrusive quacking calls are seldom heard on the remote Laysan Island lagoon.

分类学

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

Distribution

Laysan 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. #}

出现 Not recorded

countries highlighted

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

External Databases

常见问题

What does the Laysan Duck eat?

Dives for small fish, aquatic invertebrates, and amphibians; serrated bill grips prey; diet fish-heavy in winter months.

Where does the Laysan Duck live?

Restricted to Laysan Island and Midway Atoll in the Hawaiian Islands. Inhabits the central hypersaline lagoon and surrounding vegetation. Feeds on brine shrimp and flies around the lagoon margin.

Is the Laysan Duck endangered?

The Laysan Duck has a conservation status of Critically Endangered.

How does the Laysan Duck nest?

Nest type: CP.

What does the Laysan Duck sound like?

Female gives a soft, muffled quacking series; male utters a quiet rasp. Extremely rare; the soft, unobtrusive quacking calls are seldom heard on the remote Laysan Island lagoon.

How big is the Laysan Duck?

The Laysan Duck has a wingspan of 39.7 cm, weight of 465.25 g.

What order and family does the Laysan Duck belong to?

The Laysan Duck (Anas laysanensis) belongs to the order Anseriformes and the family Anatidae.