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Dendrocygna viduata

White-faced Whistling Duck


Dendrocygna viduata

(Linnaeus, C, 1766)
Sirirí Pampa
Irerê

Family: Anatidae
Order: Anseriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Other common names: Pato Silbón, Pato Viuda.

Synonyms: Anas viduata.





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Records from Chaco

Conservation status according to BirdLife International: Least Concern


Description


It is a medium-sized duck, easily recognized by its strongly contrasting plumage and upright posture. The head is white with a distinctive black patch on the nape, giving the appearance of a “veil,” which is a key identifying feature. The neck and breast are chestnut, the back dark brown, and the flanks finely barred. The legs are relatively long and grayish, adapted for both swimming and walking.

Geographic distribution: It has a wide pantropical distribution, occurring throughout much of South America, sub-Saharan Africa, and parts of the Caribbean. In South America, it ranges from the northern regions south to central and northeastern Argentina, including Paraguay, Uruguay, Bolivia, and Brazil.

Habitat: It inhabits freshwater wetlands, such as lagoons, marshes, swamps, rice fields, river margins, and reservoirs. It prefers open areas with emergent vegetation and shows good tolerance of human-altered landscapes.

Feeding: Its diet is mainly herbivorous, consisting of seeds, grains, shoots, and green parts of aquatic and terrestrial plants. Small invertebrates are occasionally consumed, especially during the breeding season, providing additional protein.

Behavior: It is a highly social and vocal species, well known for its clear, whistling calls, particularly during flight or social interactions. It is often seen in large flocks and is active both during the day and at night. Unlike many ducks, it frequently forages on land.

Nesting: Nesting usually takes place in dense vegetation near water, where a simple nest made of plant material is built. The clutch generally includes 6 to 12 eggs, incubated by both parents, who also share care of the precocial chicks.

Conservation status: It is classified as Least Concern, with large and stable populations across most of its range. Nevertheless, wetland degradation may cause local declines.


Author of this compilation: EcoRegistros – 22/12/2025

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Geographic distribution


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Species photographs

Last published photographs

Foto
Photography ID: 647511
  Adult

Colonia Benitez
Chaco
Argentina
08/05/2025
Héctor Schreiber
Foto
Photography ID: 606284
  Adult

Margarita Belén
Chaco
Argentina
09/14/2024
Héctor Schreiber
Foto
Photography ID: 600919
♂ ♀
  Adult

Colonia Benitez
Chaco
Argentina
09/14/2024
Héctor Bernardo Fernández
Foto
Photography ID: 538677
  Adult

Parque Nacional El Impenetrable
Chaco
Argentina
12/17/2017
Martín Lépez
Foto
Photography ID: 469135
  Adult

Pampa del Indio
Chaco
Argentina
10/16/2021
Mauro Méndez Renedo
Foto
Photography ID: 262922
♂ ♀
  Adult

La Leonesa
Chaco
Argentina
04/02/2018
Héctor Bernardo Fernández
Foto
Photography ID: 231886
  Adult

Capitan Solari
Chaco
Argentina
10/28/2017
Pablo Capovilla
Foto
Photography ID: 50259
  Adult

Margarita Belén
Chaco
Argentina
05/03/2014
Héctor Schreiber
Foto
Photography ID: 39938
  Adult

Maria Sara
Chaco
Argentina
02/08/2014
David Juszczuk
Foto
Photography ID: 38194
  Adult

Maria Sara
Chaco
Argentina
02/08/2014
Héctor Bernardo Fernández



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Species vocalizations

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Species videos

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Species reports



 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
253060405/08/2026ArgentinaChacoParque Nacional El ImpenetrableNicolas Olejnik
239274224/11/202510:58ArgentinaChacoInterprovincialFrancisco Encinosa
238898724/11/202510:58ArgentinaChacoInterprovincialSusana Gomez
234018305/08/2025ArgentinaChacoColonia BenitezHéctor Schreiber
217921814/09/2024ArgentinaChacoCosta Iné, Margarita BelénHéctor Schreiber
215471414/09/2024ArgentinaChacoColonia BenitezHéctor Bernardo Fernández
168773205/11/2022ArgentinaChacoParque Nacional ChacoDiego Carus
168757305/11/2022ArgentinaChacoParque Nacional ChacoMaria Belén Dri
162718814/08/2022ArgentinaChacoCamino rural, Pampa del Indio5Pablo Capovilla
162514314/08/2022ArgentinaChacoCamino rural, Pampa del Indio5Hugo Caverzasi
Page 1

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Related bibliography


Artículo Lucero, F. y J. C. Chebez. 2011. Nuevas citas y ampliación de la distribución de algunas aves en las provincias de San Juan, Mendoza y La Rioja. Nótulas Faunísticas N° 71. Fundación Félix de Azara.

Artículo Martinez, F., F. Lucero, R. Calí, D. Valdéz, D. Ferrer y J. C. Chebez. 2009. Registros novedosos de aves para las provincias de Mendoza y San Juan. Nótulas Faunísticas N° 35. Fundación Félix de Azara.



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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. White-faced Whistling Duck (Dendrocygna viduata) – Species account. Accessed from www.ecoregistros.org on 11/10/2026.