Birdsong field guide
Rufescent Tiger-Heron
Tigrisoma lineatum
A large, elusive Neotropical heron distinguished by its rich chestnut-colored head and neck and finely vermiculated gray body. It is a solitary hunter often found motionless along the edges of forested watercourses.
What it sounds like
A low-pitched, resonant, and repetitive booming or hooting 'wook-wook-wook,' often compared to the sound of a distant cow.
Reference call, compare with what you heard
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Field notes
- Juveniles exhibit a dramatically different appearance from adults, featuring coarse black and buff barring that provides exceptional camouflage in sun-dappled marshes.
- It is primarily crepuscular or nocturnal, utilizing its large eyes and patient 'stand-and-wait' hunting technique to capture fish and large insects at night.
- During courtship or when territorial, it produces a deep, rhythmic booming sound created by a specialized esophageal structure that acts as a resonator.
- Unlike most heron species that nest in large colonies, the Rufescent Tiger-Heron is a solitary nester, building isolated stick platforms high in trees.
- The species possesses 'powder down' feathers, which it crushes into a fine dust to help clean slime and oils from its plumage after consuming prey.
Habitat
Wooded banks of slow-moving rivers, swamps, mangroves, and gallery forests near freshwater.
Range
Widespread across the Neotropics, from southern Mexico through Central America to northern Argentina.
Similar & commonly confused birds
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