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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 Bolivia

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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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
182257808/09/2023BoliviaDepartamento del BeniÁrea Protegida Municipal Pampas del YacumaSantiago Juan Torres
182191808/09/2023BoliviaDepartamento del BeniÁrea Protegida Municipal Pampas del YacumaJorge La Grotteria
182255007/09/2023BoliviaDepartamento del BeniÁrea Protegida Municipal Pampas del Yacuma20Santiago Juan Torres
182189907/09/2023BoliviaDepartamento del BeniÁrea Protegida Municipal Pampas del Yacuma20Jorge La Grotteria
130197421/10/2020BoliviaDepartamento de Santa CruzLaguna Guapilo, Santa Cruz de la Sierra (ciudad)11Efraim Miguel Penaranda Barrios
95270921/07/2019BoliviaDepartamento de Santa CruzCamino a Santa Rosa del Sara, Buena Vista2Luis Cesar Tejo
128951628/08/2018BoliviaDepartamento del BeniBarba Azul Nature ReserveMarcelo Gavensky
128909326/08/2018BoliviaDepartamento del BeniRuta de Trinidad a Santa Ana del YacumaMarcelo Gavensky
77330720/06/2018BoliviaDepartamento del BeniÁrea Protegida Municipal Pampas del YacumaSusana Gomez
39507722/01/2016BoliviaDepartamento de Santa CruzLaguna Curichi Cuajo, Buena VistaNicolas Olejnik
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 23/03/2026.