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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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Conservation status according to BirdLife International: Least Concern

Synonyms: Ardea lineata.

Subspecies:


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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Last published photographs

Foto
Photography ID: 659255
  Adult

Cañada de Gómez
Santa Fe
Argentina
11/09/2025
Tramannoni Ariel
Foto
Photography ID: 619444
  Adult

Maldonado
Maldonado
Uruguay
01/19/2025
Tramannoni Ariel
Foto
Photography ID: 505464
  Adult

Colón
Entre Ríos
Argentina
08/28/2022
Tramannoni Ariel
Foto
Photography ID: 406529
  Juvenile

Lucio V. López
Santa Fe
Argentina
08/03/2020
Tramannoni Ariel



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
238366109/11/2025ArgentinaSanta FeArroyo cañada, Cañada de GómezTramannoni Ariel
223873519/01/2025UruguayMaldonadoSolanas Club, MaldonadoTramannoni Ariel
179568222/07/2023ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)Tramannoni Ariel
171257428/01/2023ArgentinaBuenos AiresEco Parque san nicolas, San Nicolás de los ArroyosTramannoni Ariel
163145828/08/2022ArgentinaEntre RíosReserva Natural Rio de los Pájaros, ColónTramannoni Ariel
127741403/08/2020ArgentinaSanta FeLucio V. LópezTramannoni Ariel
121667721/03/2020ArgentinaSanta FeCañada de Gómez1Tramannoni Ariel
Page 1

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Citation recommended:

EcoRegistros. 2026. Rufescent Tiger Heron (Tigrisoma lineatum) - Species sheet. Acceded from https://www.ecoregistros.org on 19/04/2026.