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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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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




Primeras evidencias del Sirirí Pampa (Dendrocygna viduata) en la provincia de Río Negro, Argentina
EcoRegistros Revista Nº 5 - Article Nº 3
Publish by: Julián Tocce
Published date: 06/15/2015 21:52



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Number of Photography: 1468

Foto
Photography ID: 674974
  Adult

Benito Juárez
Buenos Aires
Argentina
01/08/2026
Liliana Rubilar Puerta
Foto
Photography ID: 674389
  Adult

Esperanza
Santa Fe
Argentina
02/21/2026
Pablo Capovilla
Foto
Photography ID: 673876
  Adult

Casbas
Buenos Aires
Argentina
02/15/2026
Lucas Martín
Foto
Photography ID: 672576
  Adult

Cercania de General Pico
La Pampa
Argentina
02/07/2026
Graciela Antenucci
Foto
Photography ID: 671805
  Adult

Santa Rosa
Corrientes
Argentina
02/02/2026
Fernando Naifleisch
Foto
Photography ID: 671068
  Adult

Gorchs
Buenos Aires
Argentina
02/02/2026
Ricardo Juliano
Foto
Photography ID: 671018
  Adult

Salta (Capital)
Salta
Argentina
02/01/2026
Eduardo Vicente Fumarola
Foto
Photography ID: 671017
  Adult

Salta (Capital)
Salta
Argentina
02/01/2026
Eduardo Vicente Fumarola
Foto
Photography ID: 671016
  Adult

Salta (Capital)
Salta
Argentina
02/01/2026
Eduardo Vicente Fumarola
Foto
Photography ID: 670231
 
Entebee
Central Region
Uganda
01/02/2026
Hugo Caverzasi
Foto
Photography ID: 670017
  Adult

Almafuerte
Córdoba
Argentina
01/12/2026
Walter Bustamante



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Number of Recorded Vocalizations: 7



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
Pablo Bruni09/02/2023ArgentinaEntre RíosFederalN/AN/AYesNo
Juan Atenzio10/30/2023ArgentinaCiudad Autónoma de Buenos AiresCaballitoIndistinguishableAdultNoNo
Victor Hugo Michelini06/29/2019ArgentinaBuenos AiresColinas de Peralta ramosMar del PlataIndistinguishableAdultNoNo
J. Simón Tagtachian01/29/2018ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)IndistinguishableAdultYesNo
Carlos M. Grassini05/05/2013ArgentinaEntre RíosZona central, lagunitas, tanque australiano y molinoReserva Natural Privada El Ceibo♂ ♀AdultYesNo
Jose Luis Merlo10/08/2010ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)IndistinguishableAdultNoNo
Jose Luis Merlo10/23/2010ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)IndistinguishableAdultNoNo


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Number of Films: 9





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 Reports


 Detail of places sorted by number of records






Number of Records: 6474



Page 1 of 648
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
244531008/03/2026ArgentinaSanta FeLaguna Melincué, MelincuéAdrian Braidotti
244326107/03/202617:14ArgentinaCiudad Autónoma de Buenos AiresColectora Este Ramal Escobar 1971, Belén de Escobar1Jorge La Grotteria
244328001/03/2026ArgentinaBuenos AiresReserva Natural Puerto Mar del Plata9Victor Hugo Michelini
244090201/03/2026ArgentinaCórdobaLaguna Blaizot, Pozo del Molle5Hugo Caverzasi
244143228/02/2026ArgentinaBuenos AiresLos Carpinchos, Lobería25Susana Gomez
244119121/02/2026ArgentinaBuenos AiresAcceso a la Copelina, General Pueyrredón8Victor Hugo Michelini
244058421/02/2026ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)12Gabriel Carbajales
243730021/02/2026ArgentinaSanta FeCamino entre Esperanza y San Wendelino, EsperanzaPablo Capovilla
243711721/02/2026ArgentinaCórdobaPlanta tratamiento, Las Varillas1Hugo Caverzasi
243962117/02/2026ArgentinaCórdobaNono--Cola del Dique La Viña, San AlbertoPablo Eguia
Page 1 of 648

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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 10/03/2026.