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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 Ranchos

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: 701753
  Adult

Ranchos
Buenos Aires
Argentina
07/13/2026
Jorgelina Lopez
Foto
Photography ID: 694779
  Immature

Ranchos
Buenos Aires
Argentina
07/13/2026
Hernán Tolosa
Foto
Photography ID: 656685
  Immature

Ranchos
Buenos Aires
Argentina
09/17/2025
Hernán Tolosa
Foto
Photography ID: 459779
  Adult

Ranchos
Buenos Aires
Argentina
08/25/2021
Luis Carlos De Volder
Foto
Photography ID: 396421
  Adult

Ranchos
Buenos Aires
Argentina
07/22/2012
Enrique Sanz
Foto
Photography ID: 279003
  Adult

Ranchos
Buenos Aires
Argentina
07/22/2012
Lucas Sanz



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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
252596406/09/2026ArgentinaBuenos AiresLaguna de Ranchos, Ranchos3Pablo Richter
251671113/07/2026ArgentinaBuenos AiresRanchosJorgelina Lopez
249368213/07/2026ArgentinaBuenos AiresLaguna de Ranchos y alrededores, RanchosHernán Tolosa
249677607/03/2026ArgentinaBuenos AiresLaguna de Ranchos, Ranchos3Pablo Richter
237456217/09/2025ArgentinaBuenos AiresLaguna de Ranchos, RanchosHernán Tolosa
236134517/09/2025ArgentinaBuenos AiresLaguna de Ranchos y alrededores, RanchosHernán Tolosa
145551225/08/2021ArgentinaBuenos AiresLaguna de Ranchos y alrededores, RanchosLuis Carlos De Volder
137928625/02/2021ArgentinaBuenos AiresLaguna de Ranchos y alrededores, RanchosGuillermo Marcaida
137717525/02/2021ArgentinaBuenos AiresLaguna de Ranchos y alrededores, RanchosElsa Longo
7331212/09/2013ArgentinaBuenos AiresLaguna de Ranchos y alrededores, RanchosZaffii Daniela Zaffignani
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 22/09/2026.