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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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Species photographs

Last published photographs

Foto
Photography ID: 339798
  Adult

Ruta Nacional 81
Formosa
Argentina
06/21/2019
Carlos Valpreda
Foto
Photography ID: 229124
  Adult

Loreto
Corrientes
Argentina
10/15/2017
Carlos Valpreda



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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
252771416/08/2026ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Carlos Valpreda
237352130/09/2025ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur, Reserva Ecológica Costanera Sur (RECS)Carlos Valpreda
236699816/09/2025ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur, Reserva Ecológica Costanera Sur (RECS)2Carlos Valpreda
94079921/06/2019ArgentinaFormosaEntre Ciudad de Formosa y Las Lomitas, Ruta Nacional 81Carlos Valpreda
86540205/01/2019ArgentinaCiudad Autónoma de Buenos AiresLaguna de los Patos desde el Camino de los Lagartos, Reserva Ecológica Costanera Sur (RECS)Carlos Valpreda
81546305/10/2018ArgentinaCiudad Autónoma de Buenos AiresLaguna de los Coipos desde el mirador nuevo, Reserva Ecológica Costanera Sur (RECS)Carlos Valpreda
69754212/02/2018ArgentinaCiudad Autónoma de Buenos AiresLaguna de los Coipos entrada Brasil, Reserva Ecológica Costanera Sur (RECS)Carlos Valpreda
68479425/01/2018ArgentinaCiudad Autónoma de Buenos AiresLaguna de los Coipos, Reserva Ecológica Costanera Sur (RECS)Carlos Valpreda
66917106/01/2018ArgentinaCiudad Autónoma de Buenos AiresLaguna de los Coipos, vereda exterior, Reserva Ecológica Costanera Sur (RECS)Carlos Valpreda
64326415/10/2017ArgentinaCorrientesEstancia San Juan Poriahú, LoretoCarlos Valpreda
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.