Eurasian Wigeon

Informazioni

The Eurasian Wigeon is a medium-sized dabbling duck, known for its distinctive whistling call and the male's striking plumage. It is a highly migratory species, breeding in northern Eurasia and wintering further south.

Dimensioni e longevità

Lunghezza

42-52 cm (16.5-20.5 in)

Apertura alare

71-80 cm (28-31.5 in)

Peso

500-1070 g (1.1-2.4 lbs)

Longevità

Typically 5-10 years in the wild, up to 18 years recorded.

Dieta

Herbivore, primarily grazing on aquatic and terrestrial vegetation.

Caratteristiche fisiche

Piumaggio

Males in breeding plumage have a chestnut head with a creamy-yellow forehead and crown, a pinkish-brown breast, grey flanks, and a black rear. A prominent white patch on the upperwing is visible in flight and often at rest. Females are mottled brown and grey, with a grey head and neck, and a less distinct white wing patch. Both sexes have a small, pale blue-grey bill with a black tip.

Forma del becco

Small, relatively short, and rounded bill, pale blue-grey with a black tip.

Colore degli occhi

Dark brown.

Colore delle zampe

Greyish-black.

Caratteristiche distintive

Male's creamy-yellow forehead and crown, and the prominent white wing patch (speculum) on both sexes in flight. The male's distinctive whistling call is also a key identifier.

Aspetto giovanile

Juveniles resemble adult females but are generally duller and more uniformly brown, with less distinct markings. The white wing patch is present but may be less prominent.

Cambiamenti stagionali

Males undergo an eclipse plumage in late summer (July-September), resembling females but often retaining some chestnut on the head and a more defined white wing patch. They regain their breeding plumage by late autumn.

Dimorfismo sessuale

Pronounced. Males are much more brightly colored with chestnut, grey, and white patterns. Females are duller, mottled brown, providing camouflage.

Come identificare

1. 1

   Male Breeding Plumage

   Look for the distinctive chestnut head with a creamy-yellow forehead and crown. The grey body, pinkish-brown breast, and black rear are also key. The prominent white wing patch is visible at rest and in flight.

2. 2

   Female Plumage

   Females are mottled brown and grey. Look for the grey head and neck, and the small, pale blue-grey bill with a black tip. The white wing patch is present but less striking than in males.

3. 3

   In Flight

   Both sexes show a prominent white patch on the upperwing (speculum), which is a strong field mark. Their flight is fast and direct.

4. 4

   Vocalization

   Listen for the male's clear, high-pitched, three-note whistle: 'whee-oo'. This is often the first indication of their presence.

5. 5

   Feeding Behavior

   Observe their grazing behavior on land or 'tipping up' in shallow water to feed on vegetation. They rarely dive.

Habitat e areale

Biomi

Wetlands, including shallow freshwater lakes, marshes, slow-flowing rivers, estuaries, and coastal lagoons.

Areale geografico

Breeds across northern Eurasia, from Iceland and Scandinavia eastward through Russia to Siberia. Winters in Western and Southern Europe, North Africa, the Middle East, and parts of Asia (India, China, Japan). Vagrants occasionally reach North America.

Fascia altitudinale

Primarily lowlands, typically below 500 meters, but can be found at higher altitudes during migration or in suitable breeding habitats.

Ambienti preferiti

Shallow, vegetated freshwater bodies for breeding, often with adjacent grasslands for grazing. In winter, they favor coastal estuaries, sheltered bays, and large inland wetlands with abundant aquatic vegetation.

Comportamento

Periodo di attività

Diurnal, but can also feed at night, especially during migration or in areas with disturbance.

Abitudini alimentari

Primarily a grazer, feeding on short grasses, clover, and agricultural crops (e.g., winter wheat) on land. In water, it 'tips up' to reach submerged aquatic vegetation, seeds, and roots. Unlike many dabbling ducks, it rarely filters mud or feeds on invertebrates.

Comportamento sociale

Highly gregarious, especially outside the breeding season, forming large flocks, sometimes numbering thousands, often associating with other dabbling ducks and geese. During breeding, they are more territorial and form pairs.

Tipo di volo

Fast and direct flight, often in tight flocks. The prominent white wing patches are very conspicuous in flight. They are agile fliers.

Migrazione

Long-distance migrant. Northern populations move south for the winter, often covering thousands of kilometers. They typically migrate in large flocks, often at night.

Territorialità

Males defend a small territory around the female during the breeding season, but are not strongly territorial over nesting sites in the same way as some other duck species.

Riproduzione

Stagione riproduttiva

May to July, with peak egg-laying in late May to early June.

Abitudini di nidificazione

Nests are typically built on dry ground, often hidden in dense vegetation (grasses, sedges, heather) near water. The nest is a shallow scrape lined with grass, leaves, and down plucked from the female's breast.

Dimensione della covata

6-10 eggs.

Descrizione dell'uovo

6-10 (occasionally 5-12) creamy-white to pale buff eggs, smooth and slightly glossy. Average size: 55 x 38 mm.

Periodo di incubazione

24-25 days, incubated solely by the female.

Periodo di involo

Ducklings are precocial and leave the nest shortly after hatching. They fledge (become capable of flight) at 40-45 days old.

Cure parentali

Only the female cares for the ducklings. The male typically leaves the female shortly after incubation begins to join other males for the eclipse molt.

Dove trovarlo

Consigli sul campo

1. Listen for the whistle. The male's distinctive 'whee-oo' whistle is often heard before the bird is seen, especially in large flocks.
2. Scan flocks of ducks. Eurasian Wigeons often associate with other dabbling ducks. Look for the male's unique head pattern and the white wing patches in flight.
3. Observe feeding behavior. Watch for ducks grazing on land or 'tipping up' in shallow water, which is characteristic of wigeons.
4. Check coastal areas in winter. During the non-breeding season, large concentrations can be found in suitable coastal habitats.

Specie simili

Fatti rapidi

Primary Diet:

Vegetation (grazing)

Key Male Feature:

Creamy-yellow crown, chestnut head

Key Flight Feature:

Prominent white upperwing patch

Distinctive Call:

Male's 'whee-oo' whistle

Sociality:

Highly gregarious outside breeding season

Curiosità

• The name 'Wigeon' is thought to be derived from an Old Norse word meaning 'whistling duck', referring to the male's characteristic call.
• Eurasian Wigeons are known to steal food from other diving ducks, particularly coots, by waiting for them to surface with food and then snatching it.
• They are one of the most numerous duck species in Europe and Asia, with a global population estimated in the millions.
• Despite being primarily herbivorous, they are known to occasionally consume small invertebrates, especially during the breeding season to supplement protein intake.

Classificazione scientifica

Regno

Animalia

Phylum

Chordata

Classe

Aves

Ordine

Anseriformes

Famiglia

Anatidae

Genere

Mareca

Specie

Mareca penelope

Esplora Eurasian Wigeon