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Birds

Eastern spot-billed duck

Amazing fact

The spot-billed duck puts its neck underwater and tips up to eat plants.

沖縄野鳥研究会
Eastern spot-billed duck in its habitat (illustration)

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An illustration based on the real animal.

A little discovery to share.

The spot-billed duck puts its neck underwater and tips up to eat plants.

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THE REAL WORLD

The real Eastern spot-billed duck

Scientific name
Anas zonorhyncha
Japanese name
カルガモ
Group
Birds
Class
Aves
Order
Anseriformes
Family
Anatidae
Genus
Anas
Facts about the real animal.
01

It can be seen all year round in many parts of Japan, and it is a familiar duck that lives even on city rivers and park ponds.

02

On its wings is a shiny blue patch called the speculum.

03

From spring to summer, it builds a nest of dry grass and other material on land and raises its young.

How the Eastern spot-billed duck lives

It eats plant seeds and leaves, as well as acorns. It sometimes dives to catch underwater plants and small creatures. It visits Hokkaido mainly in summer.

井の頭自然文化園沖縄野鳥研究会

Basic data

Size
Total length: 50–60 cm
Diet
Plant seeds and leaves, acorns, and other foods
Range
Japan, southern Russia, and Southeast Asia
井の頭自然文化園

Where the Eastern spot-billed duck has been recorded

World map with dots where the Eastern spot-billed duck has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF

Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.

Names around the world

日本語
カルガモ
简体中文
斑嘴鸭
繁體中文
中華斑嘴鴨
Português (Brasil)
Pato-de-bico-pintado-chinês

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

We check each fact against its source. The illustrations simplify how the real animal looks.

The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.

The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.

This page was translated from the original Japanese with the help of AI.

Report a mistake

When you meet the Eastern spot-billed duck, look for this

  • Look for the yellow tip of its black bill.

Animals do different things from day to day, so you may not always see this.

日本野鳥の会

EXHIBIT INFORMATION

Places that keep or show the Eastern spot-billed duck

Zoos, aquariums and other places whose official websites say they keep or show this animal.

Kanto

Displays can change with the animals’ health and the seasons. Check each facility’s official website before you go.