🐦

Greater Scaup

Aythya marila

Least Concern

翼開長

42.7 cm

体重

984.0 g

科

Anatidae

目

Anseriformes

について

北極圏で繁殖し、北半球の沿岸や大きな湖で越冬する潜水ガモ（体長42〜51cm）。雄は黒い頭胸部・灰色の体・白い脇が特徴。Aythya marila（スズガモ）は海の浅瀬で大きな群れを形成し、二枚貝を好む。日本の東京湾や瀬戸内海でも冬季に大群が観察される。Anatidae科。

Physical Description

Measurement	Value	Imperial
翼開長	42.7 cm	16.8 in
体重	984.0 g	34.71 oz

識別

羽毛

Males have glossy green-black rounded head; white flanks and belly; black breast and undertail; gray back. Yellow eye. Bill blue-gray. Females dark brown with white face patch around bill. Longer white wing stripe than Lesser.

Habitat & Range

Breeds on tundra and boreal lakes in the Arctic and subarctic across Eurasia and North America. Winters in large numbers on coastal bays, estuaries, and large lakes in temperate regions.

🌲 Forest 🌿 Wetland 🌾 Grassland 🏖️ Coastal

分布域

Breeds in the high Arctic of North America; winters offshore on the Atlantic coast from Labrador to South Carolina.

Diet & Feeding

Eats molluscs, crustaceans, and aquatic invertebrates in coastal and freshwater habitats; diet shifts between invertebrate types.

保全状況

Least Concern

IUCN Red List

行動と繁殖

営巣

Nest type: CP. Incubation: 26-28 days. Fledging: 40-45 days.

一腹卵数

4-12

鳴き声

さえずり

Male gives a low, purring wheeze; female produces a harsh, rolling quacking sequence. Calls are very similar to Lesser Scaup but slightly lower-pitched; heard on open ocean bays in winter.

分類学

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

Distribution

Greater Scaup 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. #}

生息あり Not recorded

countries highlighted

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States

External Databases

よくある質問

What does the Greater Scaup eat?

Eats molluscs, crustaceans, and aquatic invertebrates in coastal and freshwater habitats; diet shifts between invertebrate types.

Where does the Greater Scaup live?

Breeds on tundra and boreal lakes in the Arctic and subarctic across Eurasia and North America. Winters in large numbers on coastal bays, estuaries, and large lakes in temperate regions.

Is the Greater Scaup endangered?

The Greater Scaup has a conservation status of Least Concern.

How does the Greater Scaup nest?

Nest type: CP. Incubation: 26-28 days. Fledging: 40-45 days.

What does the Greater Scaup sound like?

Male gives a low, purring wheeze; female produces a harsh, rolling quacking sequence. Calls are very similar to Lesser Scaup but slightly lower-pitched; heard on open ocean bays in winter.

How big is the Greater Scaup?

The Greater Scaup has a wingspan of 42.7 cm, weight of 984.0 g.

What order and family does the Greater Scaup belong to?

The Greater Scaup (Aythya marila) belongs to the order Anseriformes and the family Anatidae.