Eurasian wigeon (Mareca penelope)

Eurasian Wigeon: A Quiet Guest from the North

The Eurasian Wigeon (Mareca penelope) is one of Japan’s most common winter ducks. Known for its soft plumage and high-pitched call, it brings life to Japan’s waterscapes each winter.

Shortlist

• Medium-sized dabbling duck with distinctive coloring
• Soft, high-pitched “piuuu” call from males
• Common winter visitor across Japan
• Feeds on grasses, seeds, and aquatic vegetation
• Breeds in northern Eurasia, not in Japan
• Scientific Name: Mareca penelope
• Common Name: Eurasian Wigeon (or European Wigeon)
• Japanese Name: ヒドリガモ
• Length: 45–51 cm
• Weight: 600–1,000 g
• Male Plumage: Chestnut head with creamy forehead stripe, pink breast
• Female Plumage: Mottled brown-gray and camouflaged
• Bill: Bluish gray with a black tip
• Diet: Grasses, aquatic plants, seeds
• Breeding Season: Not in Japan – breeds in northern Europe and Asia
• Migration: Long-distance migrant, October to April in Japan
• Habitat: Lakes, ponds, rice fields, wetlands
• Conservation Status: Common, not endangered

Table of Contents

Introduction

As cold winds begin to sweep across the land in autumn, flocks of Eurasian Wigeon arrive from the north. Quiet and gentle, they become a familiar sight on ponds, fields, and rivers across Japan. These visitors from Eurasia bring not just life to the landscape, but also a signature sound: a soft “piuuu” that floats like a whistle over winter waters.

Appearance

The Eurasian Wigeon is a medium-sized duck with a rounded body and short neck, giving it a compact yet elegant shape.

Male (in breeding plumage):

• Chestnut head with a prominent cream-colored forehead stripe
• Pinkish chest, pale gray flanks, white belly
• Back with soft brown-gray patterns
• Black tail bordered with white
• Bill: bluish gray with a black tip
• Legs: gray; eyes: dark

Female:

• Mottled brown-gray overall
• Slightly darker head, lightly speckled
• Bill and legs similar to the male

The male stands out with striking contrast; the female blends seamlessly into her environment.

Habitat

In Japan, the Eurasian Wigeon is a typical winter visitor found widely from Hokkaidō to Kyūshū.

Preferred habitats:

• Shallow zones of lakes, reservoirs, and estuaries
• Flooded rice fields and wetlands
• City parks and slow-flowing rivers

They roost on water at night and forage on land by day, especially in open grassy or agricultural areas.

Diet

Wigeons are primarily herbivorous, foraging mainly on the ground or in shallow water.

Typical foods:

• Grasses and young shoots
• Aquatic plants and algae
• Seeds and fallen fruit
• Crop remnants, such as leftover rice grains
• Occasionally small invertebrates

They feed calmly in groups, heads down, often moving in slow, synchronized patterns.

Behavior

Eurasian Wigeons are peaceful, social birds that spend the winter in dense flocks.

Notable traits:

• Gather in flocks of dozens or even hundreds
• Highly social and cohesive group behavior
• The male emits a soft, high-pitched “piuuu” call
• Flight is swift and low, but generally quiet
• Calm demeanor, even in urban or semi-rural areas

Their soft vocalizations define them in the soundscape of Japanese winter wetlands.

Breeding

Eurasian Wigeons do not breed in Japan. They are winter visitors only.

Breeding regions include:

• Scandinavia
• Siberia
• Northern Russia and Arctic tundra zones

They favor marshes, bogs, and open wetland regions for nesting.

Migration timeline:

• Arrival in Japan: October
• Departure: April or early May

During their stay, they rely on Japan’s mild winter habitats for rest and feeding.

Population Status

The Eurasian Wigeon is one of Japan’s most abundant winter ducks.

Current situation:

• Stable population numbers
• Not considered endangered

Ecological significance:

• Indicator species for wetland health
• Frequently used in environmental education and nature tourism
• Target species in birdwatching and ornithological surveys

Species Overview – Eurasian Wigeon

FAQ – Common Questions About the Eurasian Wigeon