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Tigrisoma lineatum

Rufescent Tiger Heron


Tigrisoma lineatum

(Boddaert, P, 1783)
Hocó Colorado
Socó-boi

Family: Ardeidae
Order: Pelecaniformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Synonyms: Ardea lineata.

Subspecies:





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Records from Esteros del Iberá

Conservation status according to BirdLife International: Least Concern


Description


It is a medium to large-sized heron with a robust build and upright posture. Adults show a distinctive combination of rufous head and neck, contrasting with a dark gray dorsal area and a paler gray underside. From the throat to the upper chest, it displays long reddish and white streaks, a key identifying feature. The bill is strong and pointed, adapted for capturing aquatic prey, and the legs are long for wading in shallow waters. The eyes are usually pale and stand out against the face. At rest, it keeps its neck retracted, but when alert it extends it, making the streaked pattern more visible. Juveniles differ markedly, showing a heavily barred pattern in ochre, brown, blackish, and white tones, which provides effective camouflage among vegetation.

Geographic distribution: It is widely distributed across tropical and subtropical America, from southern Mexico to northern Argentina and Uruguay. It occurs throughout much of Central and South America, including Brazil, Paraguay, Bolivia, and Colombia. Although it may be locally common, it is often overlooked due to its secretive behavior and preference for densely vegetated habitats.

Habitat: It primarily inhabits freshwater wetlands, such as marshes, swamps, lagoons, and the edges of slow-moving rivers and streams. It favors areas with dense emergent or riparian vegetation, which provide cover and hunting grounds. It may also occur in floodplains and occasionally in mangroves. It tends to avoid heavily disturbed environments, preferring relatively well-preserved areas.

Feeding: Its diet mainly consists of fish, amphibians, and aquatic insects, though it may also take crustaceans and small reptiles. It uses a hunting strategy based on stillness and ambush, remaining motionless for long periods until detecting prey, then striking quickly and precisely with its bill. It may also move slowly through shallow water while carefully scanning its surroundings.

Behavior: This species is generally solitary and largely crepuscular, though it may be active during the day. It is known for its secretive and cautious behavior, often remaining still or moving slowly to avoid detection. When threatened, it may adopt rigid postures to blend with surrounding vegetation. Its flight is direct, with slow wingbeats and the neck retracted. Vocalizations are infrequent and low-pitched.

Nesting: It builds platform nests of sticks, usually placed in trees or shrubs near water. Breeding typically coincides with periods of higher food availability. The clutch usually consists of 2 to 4 eggs, and both parents share incubation and chick-rearing duties. The young remain in the nest until ready to fledge and are fed by regurgitation.

Conservation status: It is currently classified as Least Concern, due to its wide distribution and relatively stable population. However, it faces local threats such as wetland loss and degradation, pollution, and human disturbance. The conservation of wetland habitats is essential for its persistence.


Author of this compilation: EcoRegistros – 04/17/2026






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Geographic distribution


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Species photographs

Last published photographs

Foto
Photography ID: 527324
  Immature

Esteros del Iberá
Corrientes
Argentina
05/11/2021
Ramon Moller Jensen
Foto
Photography ID: 502676
  Adult

Esteros del Iberá
Corrientes
Argentina
07/22/2022
Karina Kondert
Foto
Photography ID: 424602
  Adult

Esteros del Iberá
Corrientes
Argentina
12/06/2020
Eugenia Boggiano
Foto
Photography ID: 378384
  Juvenile

Esteros del Iberá
Corrientes
Argentina
01/25/2020
Margarita Cervio
Foto
Photography ID: 319687
  Adult

Esteros del Iberá
Corrientes
Argentina
09/10/2018
Sebastián Otero
Foto
Photography ID: 304161
  Juvenile

Esteros del Iberá
Corrientes
Argentina
11/25/2018
Guillermo C Olivero
Foto
Photography ID: 304152
  Adult

Esteros del Iberá
Corrientes
Argentina
11/25/2018
Guillermo C Olivero
Foto
Photography ID: 289714
  Juvenile

Esteros del Iberá
Corrientes
Argentina
09/23/2018
Pablo Eguia
Foto
Photography ID: 289712
  Juvenile

Esteros del Iberá
Corrientes
Argentina
09/23/2018
Pablo Eguia
Foto
Photography ID: 270460
  Adult

Esteros del Iberá
Corrientes
Argentina
06/09/2018
Gustavo Fernando Durán
Foto
Photography ID: 211017
  Adult

Esteros del Iberá
Corrientes
Argentina
07/10/2017
Lucas Pisana



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 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
252696713/09/2026ArgentinaCorrientesNavegacion Rio Corrientes, Esteros del Iberá1Diego Oscar
250545702/08/2026ArgentinaCorrientesNavegación Rio Miriñay, Esteros del Iberá1Diego Oscar
235630710/09/2025ArgentinaCorrientesNavegación Rio Miriñay, Esteros del Iberá4Diego Oscar
235007213/08/2025ArgentinaCorrientesNavegación Rio Miriñay, Esteros del Iberá2Diego Oscar
235017412/08/2025ArgentinaCorrientesNavegacion Rio Corrientes, Esteros del Iberá2Diego Oscar
214694909/09/2024ArgentinaCorrientesColonia Carlos Pellegrini, Esteros del Iberá1Diego Oscar
214629308/09/2024ArgentinaCorrientesCamba Trapo, Esteros del Iberá2Diego Oscar
214617608/09/2024ArgentinaCorrientesNavegación Rio Miriñay, Esteros del Iberá4Diego Oscar
214593207/09/2024ArgentinaCorrientesNavegacion Rio Corrientes, Esteros del Iberá3Diego Oscar
213633931/03/2024ArgentinaCorrientesEsteros del IberáLeonardo Caballero
Page 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Rufescent Tiger Heron (Tigrisoma lineatum) – Species account. Accessed from www.ecoregistros.org on 21/09/2026.