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Pardirallus maculatus

Spotted Rail


Pardirallus maculatus

(Boddaert, P, 1783)
Gallineta Overa
Saracura-carijó

Family: Rallidae
Order: Gruiformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Synonyms: Rallus maculatus.

Subspecies:





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Records from Bella Unión

Conservation status according to BirdLife International: Least Concern


Description


Characterized by a medium-sized, slender body, this taxon measures between 25 and 28 centimeters in total length and weighs approximately 130 to 220 grams. Its plumage is highly distinctive and intricate, defined by a dense pattern of white spots and bars set against a dark brownish-black background on its head, neck, and upperparts, while the chest and belly present a sharply defined black-and-white barred pattern. The bill is long, slightly decurved, and displays a vivid yellowish-green coloration, marked by a conspicuous bright red spot at the base of the lower mandible, which serves as a vital diagnostic field mark. Its eyes are an intense, piercing red that contrasts beautifully with the dark head plumage, and its legs and feet are pinkish to reddish-brown, structurally adapted for walking over soft mud and floating vegetation rather than swimming.

Geographical distribution: Occupies a highly fragmented yet extensive range throughout the Neotropical region, extending from northern Mexico, through various Central American countries such as Guatemala, Belize, Costa Rica, and Panama, and far into South America. On the South American continent, it occurs locally in Colombia, Venezuela, Ecuador, Peru, Bolivia, Paraguay, Uruguay, northern Argentina, and across extensive territories of Brazil. Additionally, resident populations are well-documented on several Caribbean islands, including Cuba, Hispaniola, and Trinidad and Tobago, highlighting its unexpected dispersal capabilities despite its apparently weak flight.

Habitat: Primarily inhabits freshwater wetlands characterized by dense, emergent vegetation, including marshes, swamps, wet pastures, freshwater mangroves, and flooded agricultural fields, particularly rice paddies. It shows a strong preference for wetlands dominated by plants of the genera Typha, Scirpus, and Cyperus, which offer the dense, vertical cover necessary to evade predators. The species actively avoids deep, open water, selecting instead shallow-water microhabitats and saturated soils where it can easily walk, forage, and remain hidden beneath the protective canopy of marsh vegetation.

Feeding: Exhibits an omnivorous diet with a strong preference for aquatic invertebrates, which make up the bulk of its nutritional intake. It regularly consumes a wide variety of insects and their larvae, beetles, dragonflies, small mollusks such as freshwater snails, crustaceans, earthworms, and occasionally small vertebrates like tadpoles and small fish. This animal-based diet is supplemented with plant matter, including seeds of aquatic plants and tender grass shoots, which it searches for by probing the mud and inspecting floating vegetation.

Behavior: Is characterized by its extremely secretive, shy, and largely crepuscular and nocturnal habits, making direct field observations rare and challenging. It moves quietly through dense vegetation, walking with a deliberate gait while constantly flicking its tail upward in a rhythmic motion. When threatened, it prefers to run quickly through the dense undergrowth rather than taking flight; if forced to fly, its flight is weak, labored, and brief, with its legs dangling awkwardly before it drops back down into the safety of the reeds. It is far more frequently detected by its distinctive vocalizations, which consist of a series of harsh screeches and low grunts emitted mostly at dawn and dusk.

Nesting: Constructs a well-hidden, cup-shaped nest made of dry reeds, grasses, and sedges gathered from the immediate surroundings. These nesting platforms are typically suspended within dense vegetation, placed just above the water level, or built directly on top of floating aquatic plants to protect the clutch from fluctuating water levels. A typical clutch consists of 3 to 7 eggs of a creamy-buff color, heavily speckled with brown, reddish, and lavender spots. Both parents share the incubation duties, which last approximately 19 to 21 days, as well as the care of the precocial chicks, which hatch covered in jet-black down and are capable of leaving the nest to follow their parents within hours of hatching.

Conservation status: Is currently evaluated as Least Concern (LC) on the IUCN Red List of Threatened Species, owing to its vast geographical distribution. However, local populations of Pardirallus maculatus face severe threats from habitat loss and fragmentation caused by the draining of wetlands for agricultural conversion, water pollution from pesticide runoff and industrial waste, and rapid urban development, emphasizing the need for targeted wetland conservation strategies to ensure the survival of its scattered populations.



Compilation and publication: EcoRegistros – 03/08/2026

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Species photographs

Last published photographs

Foto
Photography ID: 619189
  Adult

Bella Unión
Artigas
Uruguay
11/08/2024
Adrian Antunez
Foto
Photography ID: 124445
  Adult

Bella Unión
Artigas
Uruguay
10/30/2015
Julio Cesar Castillo Yazauskas
Foto
Photography ID: 124170
  Adult

Bella Unión
Artigas
Uruguay
10/30/2015
Gonzalo Campaña
Foto
Photography ID: 123875
  Adult

Bella Unión
Artigas
Uruguay
10/31/2015
Adrian Antunez



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Species reports



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
223775408/11/2024UruguayArtigasBella Unión, Bella UniónAdrian Antunez
35803131/10/2015UruguayArtigasBella UniónAdrian Antunez
36031130/10/2015UruguayArtigasBella UniónJulio Cesar Castillo Yazauskas
35917230/10/2015UruguayArtigasBella UniónGonzalo Campaña
Page 1

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Related bibliography


Artículo Lucero, F. 2010. Aves nuevas, raras o con pocos registros para las provincias de Mendoza y San Juan. Nuestras Aves, 54: 57-62.



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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Spotted Rail (Pardirallus maculatus) – Species account. Accessed from www.ecoregistros.org on 14/09/2026.