Greater Sooty Owl

Birds > Owls

AT A GLANCE
Common Name: Greater Sooty Owl
Scientific Name: Tyto tenebricosa
Category: Birds
Subcategory: Owls
Size: Body length: 14.5–20.0 in (37–51 cm); wingspan: 39–45 in (100–115 cm)
Weight: 1.1–2.6 lb (500–1200 g); females are significantly larger than males
Lifespan: 10–16 years in dense wet eucalyptus forests
Diet: Carnivore (arboreal marsupials, sugar gliders, ringtail possums, native bush rats, and bandicoots)
Habitat: Dense temperate and subtropical rainforests, wet sclerophyll eucalyptus gullies, and montane ravines
Range: Coastal eastern Australia and montane rainforests of New Guinea
Conservation Status: Least Concern (IUCN Red List; regionally vulnerable due to old-growth hollow loss)

Overview

The Greater Sooty Owl (Tyto tenebricosa) is a magnificent, shadowy nocturnal apex predator restricted to the ancient, mist-draped wet eucalyptus forests and temperate rainforest gullies of eastern Australasia. With its heart-shaped facial disc, deep coal-black eyes, and dark, ash-grey plumage sprinkled with silver flecks, this elusive forest owl is both an acoustic marvel and a top-tier hunter of arboreal mammals.

Biology and Physical Characteristics

Tyto tenebricosa is a large, heavily built barn owl family member featuring dark charcoal to sooty-grey plumage finely stippled with tiny white spots across its head, back, and wings. Its heart-shaped facial disc is dark smoky-grey bordered by a prominent black perimeter, framing two immense, forward-facing black eyes adapted for navigating pitch-black forest understories. Its feet terminate in powerful, long-toed talons with razor-sharp recurved claws designed to pluck agile gliding possums straight from tree branches.

Behavior and Ecology

Strictly nocturnal, Greater Sooty Owls roost during daylight inside deep tree hollows of mature, old-growth eucalyptus or within shadowy rock fissures along canyon streams. At dusk, they emerge to hunt arboreal marsupials—including Sugar Gliders, Common Ringtail Possums, and Feathertail Gliders—using asymmetrical ear cavities to pinpoint rustling leaves in total darkness. Their haunting territorial call is an eerie, descending shriek known as the ‘bomb whistle,’ resembling the sound of a falling whistle bomb echoing through forested gorges.

Conservation and Human Impact

Categorized globally as Least Concern, the Greater Sooty Owl is nevertheless considered vulnerable across significant parts of its Australian range due to timber harvesting, clearing of old-growth forests, and destructive megafires. The species is obligate hollow-nesters, requiring massive, hollow-bearing trees that can take over 150 to 200 years to develop. Strict forestry regulations and designated rainforest reserves are critical for maintaining viable nesting corridors.

Interesting Factoid

The Greater Sooty Owl’s distinctive vocalization sounds remarkably like a descending whistle bomb, earning it the popular bush nickname ‘the screaming woman bird’ or ‘bomb whistle owl.’

Last updated: October 2026