All birds/Anatidae/Masked Duck

AI reconstruction created with Nano Banana 2 · 1K, grounded in the profile’s documented taxonomy, habitat, natural-history sources, and an open-license visual reference when available. It is an interpretive image, not documentary evidence. Image policy →

PRB-0029Anseriformes

Masked Duck

Pato Dominico

Nomonyx dominicus

ResidentIUCN LC · Least Concern

The masked duck (Nomonyx dominicus) is a tiny stiff-tailed duck ranging through the tropical Americas.

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FamilyAnatidaeDucks, Geese, and Waterfowl

Puerto Rico occurrenceResidentAvibase inferred core 380

Primary habitatFreshwater marshes; vegetated ponds and lagoonsFreshwater marshes; vegetated ponds and lagoons

Primary dietPlantHerbivore aquatic

Average mass361 gGlobal trait estimate

MovementIrregular / nomadic movements; Sedentary / residentAquatic

Sound archive

Hear its voice

Explore real songs and calls. The spectrogram turns each sound into a visual trace of time and frequency.

XC770310Recording 1 of 3song

SpectrogramNomonyx dominicus

0:000:19

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Sound recorded by Fernando Igor de Godoy · XC770310 · CC BY-NC-SA 4.0. Visualization by Stichting Xeno-canto voor Natuurgeluiden.

Every recording retains the creator, catalogue number, and license published by Xeno-canto. Metadata via GBIF ↗

Island profile

Catalog scopeAvibase inferred core 380

About the Masked Duck

The masked duck (Nomonyx dominicus) is a tiny stiff-tailed duck ranging through the tropical Americas.

Conservation

Least Concern

IUCN LC; DNER EN

Global IUCN: LC
Puerto Rico DNER: EN
Federal ESA: No current listing in source crosswalk
Critical habitat: Not identified in source crosswalk

Natural history

How it lives

Habitat: Freshwater marshes; vegetated ponds and lagoons
Elevation: 0–1450 m
Nest: Cup / bowl · Ground; Grass
Clutch: 4–6 eggs
Social behavior: Social / flocking; Pairs / family groups; Singly and pairs

Keep exploring

This bird belongs to 7 paths through the atlas.

The complete catalogAll Birds of Puerto Rico402 birds →Birds by habitatWetland Birds116 birds →ConservationLeast Concern Birds328 birds →ConservationPuerto Rico DNER-Listed Birds28 birds →Occurrence in Puerto RicoBreeding Birds55 birds →Occurrence in Puerto RicoResident Birds47 birds →Bird familyDucks, Geese, and Waterfowl (Anatidae)31 birds →

Evidence trail

Sources, media & further reading

eBird species profile↗Macaulay Library media↗iNaturalist observations↗GBIF occurrence data↗BirdLife species factsheet↗Xeno-canto recordings↗Wikipedia in English↗Wikipedia en Español↗Media source · commons.wikimedia.org↗Source record 1↗Source record 2↗Source record 3↗Source record 4↗Source record 5↗

Research note: Regulation uses feminine ending dominica; current species name is dominicus