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

This atlas includes Masked Duck (Nomonyx dominicus) with atlas status “Resident” within scope “Avibase inferred core 380.” Puerto Rico context sources associate it with Freshwater marshes; vegetated ponds and lagoons.

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