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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 Paraguay

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: 495851
 
Curuguaty
Canindeyú
Paraguay
05/21/2022
Victor Hugo Michelini
Foto
Photography ID: 285631
♂ ♀
 
Hernandarias
Alto Paraná
Paraguay
07/27/2018
Jorge Sarubbi Künzle
Foto
Photography ID: 211784
  Adult

Hernandarias
Alto Paraná
Paraguay
07/07/2017
Jorge Sarubbi Künzle
Foto
Photography ID: 179672
♂ ♀
  Adult

General Artigas
Itapúa
Paraguay
12/04/2016
Roberto Fermín Derna
Foto
Photography ID: 175921
♂ ♀
 
Hernandarias
Alto Paraná
Paraguay
11/16/2016
Jorge Sarubbi Künzle
Foto
Photography ID: 128887
  Adult

Yegros
Caazapá
Paraguay
12/12/2015
Roberto Fermín Derna
Foto
Photography ID: 123762
  Adult

Coronel Bogado
Itapúa
Paraguay
03/22/2015
Roberto Fermín Derna
Foto
Photography ID: 96534
  Adult

Hernandarias
Alto Paraná
Paraguay
02/05/2015
Jorge Sarubbi Künzle



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Last Vocalizations published




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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
242258725/01/2026ParaguaySan PedroZona Aldea 2, Col. Volendam, San Pedro, Py11Dominic Oviedo Löwen
221612120/12/2024ParaguaySan PedroEstero Jetyty zona Colonia 21Dominic Oviedo Löwen
221612017/12/2024ParaguaySan PedroEstero Jetyty zona Colonia 23Dominic Oviedo Löwen
221633710/07/2024ParaguayÑeembucúKamba Kua125Dominic Oviedo Löwen
221612228/01/2024ParaguayBoquerónIparoma3Dominic Oviedo Löwen
221611827/11/2023ParaguaySan PedroCasa de Oma y Opa2Dominic Oviedo Löwen
221522907/10/2023ParaguayCentralPlaya - Ex Calera San Antonio30Dominic Oviedo Löwen
221522712/07/2023ParaguayPresidente HayesLaguna León60Dominic Oviedo Löwen
221523108/07/2023ParaguayPresidente Hayescampamento laguna capitan20Dominic Oviedo Löwen
221523008/07/2023ParaguayPresidente Hayes Presidente Hayes252Dominic Oviedo Löwen
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 15/04/2026.