Tundra Swan

について

北極圏で繁殖し、北半球の温帯沿岸・湖沼で越冬するハクチョウ（体長115〜150cm）。純白の羽毛と黄と黒の嘴が特徴で、コハクチョウとも呼ばれる。Cygnus columbianus（コハクチョウ）は日本の越冬地として琵琶湖や北日本の湖沼が重要で、毎年何千羽もが越冬する壮観な光景が見られる。Anatidae科。

Physical Description

Measurement	Value	Imperial
翼開長	107.6 cm	42.4 in
体重	6675.0 g	235.45 oz

識別

羽毛

All-white plumage; bill black with small yellow patch at base near eye. Neck shorter and rounder-headed than Trumpeter Swan. Juveniles grayish-brown. Bewick's race has more extensive yellow on bill.

Habitat & Range

Breeds on Arctic tundra ponds and lakes in Alaska, Canada, and Siberia. Winters on coastal estuaries, shallow bays, agricultural fields, and freshwater lakes in North America, Europe, and eastern Asia.

🌿 Wetland 🌾 Grassland 🏖️ Coastal

分布域

Breeds in the northern Great Plains; winters along the Gulf Coast from Texas to Florida. Uses the Central and Mississippi flyways.

Diet & Feeding

Eats seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; diet becomes more invertebrate-heavy in spring.

保全状況

Least Concern

IUCN Red List

行動と繁殖

営巣

Nest type: M. Incubation: 29-32 days. Fledging: 40-75 days.

一腹卵数

3-6

鳴き声

さえずり

A high, bugling 'who-who-who' with a musical quality. North American subspecies (Whistling Swan) produces a higher-pitched call than European Bewick's Swan (Cygnus c. bewickii).

分類学

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

Distribution

Tundra Swan has been recorded in 5 countries.

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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 Tundra Swan eat?

Eats seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; diet becomes more invertebrate-heavy in spring.

Where does the Tundra Swan live?

Breeds on Arctic tundra ponds and lakes in Alaska, Canada, and Siberia. Winters on coastal estuaries, shallow bays, agricultural fields, and freshwater lakes in North America, Europe, and eastern Asia.

Is the Tundra Swan endangered?

The Tundra Swan has a conservation status of Least Concern.

How does the Tundra Swan nest?

Nest type: M. Incubation: 29-32 days. Fledging: 40-75 days.

What does the Tundra Swan sound like?

A high, bugling 'who-who-who' with a musical quality. North American subspecies (Whistling Swan) produces a higher-pitched call than European Bewick's Swan (Cygnus c. bewickii).

How big is the Tundra Swan?

The Tundra Swan has a wingspan of 107.6 cm, weight of 6675.0 g.

What order and family does the Tundra Swan belong to?

The Tundra Swan (Cygnus columbianus) belongs to the order Anseriformes and the family Anatidae.