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Brent Goose

Branta bernicla

Least Concern

翼開長

63.9 cm

体重

1335.0 g

科

Anatidae

目

Anseriformes

について

北極圏で繁殖し、北半球の海岸で越冬する小型のガン（体長55〜66cm）。黒い頭・首・胸に短い白い首輪が特徴。Branta bernicla（コクガン）は主にアマモなどの海草を食べ、干潟や浅い入り江を好む。日本でも北海道・東北の海岸で越冬する姿が見られ、個体数は比較的少ない。Anatidae科。

Physical Description

Measurement	Value	Imperial
翼開長	63.9 cm	25.2 in
体重	1335.0 g	47.09 oz

識別

羽毛

Small; mostly black head, neck, and breast. Small white neck-patch on adults. Back dark brownish-gray; belly pale gray to white depending on subspecies. White undertail coverts. Sexes similar.

Habitat & Range

Breeds on high-Arctic tundra; winters on estuaries, coastal mudflats, saltmarshes, and sea-grass beds along Atlantic and Pacific coastlines. One of the most strictly coastal wintering geese.

🌿 Wetland 🌾 Grassland 🏖️ Coastal

分布域

Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.

Diet & Feeding

Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged vegetation.

保全状況

Least Concern

IUCN Red List

行動と繁殖

営巣

Nest type: SC. Incubation: 23-29 days. Fledging: 40-45 days.

一腹卵数

1-10

鳴き声

さえずり

A low, guttural 'rronk' or 'ronk-ronk' from flocks. Soft nasal calls in feeding groups. A subtle, understated call for a goose — less loud than most Anser geese.

分類学

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

Distribution

Brent Goose has been recorded in 9 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 🇫🇷 France 🇳🇱 Netherlands 🇳🇴 Norway 🇸🇮 Slovenia 🇸🇪 Sweden 🇬🇧 United Kingdom 🇺🇸 United States

External Databases

よくある質問

What does the Brent Goose eat?

Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged vegetation.

Where does the Brent Goose live?

Breeds on high-Arctic tundra; winters on estuaries, coastal mudflats, saltmarshes, and sea-grass beds along Atlantic and Pacific coastlines. One of the most strictly coastal wintering geese.

Is the Brent Goose endangered?

The Brent Goose has a conservation status of Least Concern.

How does the Brent Goose nest?

Nest type: SC. Incubation: 23-29 days. Fledging: 40-45 days.

What does the Brent Goose sound like?

A low, guttural 'rronk' or 'ronk-ronk' from flocks. Soft nasal calls in feeding groups. A subtle, understated call for a goose — less loud than most Anser geese.

How big is the Brent Goose?

The Brent Goose has a wingspan of 63.9 cm, weight of 1335.0 g.

What order and family does the Brent Goose belong to?

The Brent Goose (Branta bernicla) belongs to the order Anseriformes and the family Anatidae.