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Masked Duck - BirdForum Opus

Male on left, female on right
Photo by arthurgrosset
Aguas de Sao Pedro, Sao Paulo, Brazil, August 2004
Nomonyx dominicus



  • Rust body
  • Black face
  • Mottled wings

Female, Winter Male, & Juvenile

  • Barred brownish-grey body
  • Two horizontal dark stripes through buffy face


Central and South America and the West Indies:
Central America: Mexico Guatemala, Belize, El Salvador, Honduras, Nicaragua, Costa Rica, Panama
West Indies (The Caribbean): Cuba, Jamaica, Haiti, Dominican Republic, Puerto Rico, Antigua, Guadeloupe, Martinique, Saint Lucia, Barbados, Saint Vincent and the Grenadines, Grenada, Trinidad, Netherlands Antilles
South America: Colombia, Venezuela, Guyana, Suriname, French Guiana, Ecuador, Peru, Bolivia, Brazil, Paraguay, Uruguay, Argentina


This is a monotypic species.


The need fresh water and dense marshy vegetation, with tree cover, for breeding. They can also be found in mangrove swamps.


A diving duck.


They eat aquatic vegetation, including seeds and roots. Also insects and crustaceans.


  1. Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
  2. Avibase

Recommended Citation

External Links

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