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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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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: 692671
  Juvenile

Parque Unzué
Entre Ríos
Argentina
06/25/2026
Gustavo Puente
Foto
Photography ID: 636490
  Juvenile

Ceibas
Entre Ríos
Argentina
05/29/2025
Gustavo Puente
Foto
Photography ID: 565355
  Immature

Gualeguaychú
Entre Ríos
Argentina
01/15/2024
Gustavo Puente
Foto
Photography ID: 526431
  Adult

Gualeguaychú
Entre Ríos
Argentina
02/28/2023
Gustavo Puente
Foto
Photography ID: 519965
  Adult

Santa Fe
Santa Fe
Argentina
01/04/2023
Gustavo Puente
Foto
Photography ID: 480626
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/29/2022
Gustavo Puente
Foto
Photography ID: 452103
  Adult

Gualeguaychú
Entre Ríos
Argentina
06/28/2021
Gustavo Puente
Foto
Photography ID: 375602
  Adult

Gualeguaychú
Entre Ríos
Argentina
01/18/2020
Gustavo Puente
Foto
Photography ID: 343686
  Juvenile

Ceibas
Entre Ríos
Argentina
07/28/2019
Gustavo Puente
Foto
Photography ID: 310871
  Juvenile

Gualeguaychú
Entre Ríos
Argentina
01/13/2019
Gustavo Puente
Foto
Photography ID: 264041
  Adult

Gualeguaychú
Entre Ríos
Argentina
05/12/2018
Gustavo Puente



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Species reports



 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
248646725/06/2026ArgentinaEntre RíosParque UnzuéGustavo Puente
241118705/01/2026ArgentinaEntre RíosArroyo Martinez y Boca del Uruguay, Villa ParanacitoGustavo Puente
233887008/08/2025ArgentinaEntre RíosReserva Natural Municipal Las PiedrasGustavo Puente
229346629/05/2025ArgentinaEntre RíosCuatro hermanas, CeibasGustavo Puente
220694309/12/2024ArgentinaEntre RíosReserva de Uso Múltiple Isla del PuertoGustavo Puente
194873915/01/2024ArgentinaEntre RíosGualeguaychúGustavo Puente
173000028/02/2023ArgentinaEntre RíosZona humedales de la Península, GualeguaychúGustavo Puente
169804504/01/2023ArgentinaSanta FeCostanera Laguna Setúbal, Santa FeGustavo Puente
153959529/01/2022ArgentinaEntre RíosParque Unzué, GualeguaychúGustavo Puente
142170028/06/2021ArgentinaEntre RíosZona la península "punta Sur", GualeguaychúGustavo Puente
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 27/09/2026.