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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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Records from Laguna Don Tomás

Conservation status according to BirdLife International: Least Concern

Other common names: Pato Silbón, Pato Viuda.

Synonyms: Anas viduata.


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

 See related literature





🌿 EcoRegistros Revista - Related Articles


📖 Issue Nº 5 • Article Nº 3
✍ Julián Tocce
06/15/2015 21:52



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Last published photographs

Foto
Photography ID: 531837
  Adult

Laguna Don Tomás
La Pampa
Argentina
04/15/2023
Julián Tocce
Foto
Photography ID: 377687
♂ ♀
  Adult

Laguna Don Tomás
La Pampa
Argentina
01/14/2020
Marcelo Fabio Dolsan
Foto
Photography ID: 346427
  Adult

Laguna Don Tomás
La Pampa
Argentina
02/07/2019
Gonzalo Camiletti
Foto
Photography ID: 135267
  Adult

Laguna Don Tomás
La Pampa
Argentina
01/18/2016
Tomas Aguirre Valles
Foto
Photography ID: 123751
  Adult

Laguna Don Tomás
La Pampa
Argentina
10/28/2015
Marcelo Fabio Dolsan
Foto
Photography ID: 87914
  Adult

Laguna Don Tomás
La Pampa
Argentina
03/07/2015
Mirian Lorena González
Foto
Photography ID: 87799
 
Laguna Don Tomás
La Pampa
Argentina
03/08/2015
Clarisa Pastor
Foto
Photography ID: 87698
♂ ♀
  Adult

Laguna Don Tomás
La Pampa
Argentina
03/07/2015
Rodrigo Fiorucci
Foto
Photography ID: 87659
  Adult

Laguna Don Tomás
La Pampa
Argentina
03/08/2015
Federico Burgos Bauer
Foto
Photography ID: 42643
  Adult

Laguna Don Tomás
La Pampa
Argentina
03/03/2014
Eduardo Di Fiore



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Last Filmings published




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 Reports


 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
174958415/04/2023ArgentinaLa PampaZona de laguna, Laguna Don Tomás12Julián Tocce
119238512/02/2020ArgentinaLa PampaLaguna Don Tomás100Pablo Diaz Peñalba
117829114/01/2020ArgentinaLa PampaLaguna Don TomásMarcelo Fabio Dolsan
112061719/10/2019ArgentinaLa PampaLaguna Don Tomás1Gonzalo Camiletti
88319407/02/2019ArgentinaLa PampaCuenco Norte, Laguna Don Tomás1Gonzalo Camiletti
68459702/01/2018ArgentinaLa PampaLaguna Don TomásFederico Bruno
39474918/01/2016ArgentinaLa PampaLaguna Don TomásTomas Aguirre Valles
35765428/10/2015ArgentinaLa PampaLaguna Don TomásMarcelo Fabio Dolsan
33426625/09/2015ArgentinaLa PampaLaguna Don TomásLihué Bruno
27702003/05/2015ArgentinaLa PampaCuenco Norte, Laguna Don TomásFederico Bruno
Page 1

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Bibliography related


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.



Citation recommended:

EcoRegistros. 2026. White-faced Whistling Duck (Dendrocygna viduata) - Species sheet. Acceded from https://www.ecoregistros.org on 05/04/2026.