Chestnut-backed Owlet (Glaucidium castanotum)

The Chestnut-backed Owlet is a small, endemic owl of Sri Lanka, easily recognized by its rich chestnut-colored back and head contrasted with a paler underbelly. This diurnal and nocturnal species is known for its secretive habits, often remaining hidden among dense foliage, yet it can be active during the day, especially in the mornings and late afternoons.

🌎 Habitat & Distribution
🌳 Habitat

This owl inhabits primary and secondary wet-zone forests, including forest interiors and dense canopy regions. It often roosts in tree hollows, dense branches, and occasionally in abandoned woodpecker cavities. Its preference for intact forest habitats with minimal disturbance makes these ecosystems essential for its survival.

📍 Distribution

Endemic to Sri Lanka, the Chestnut-backed Owlet is mainly found in lowland and mid-elevation wet zone forests, such as Sinharaja Forest Reserve, Kanneliya, and Kitulgala. Its range is highly localized, and it is rarely observed outside dense forested areas.

🦉 Behavior
Feeding Behavior

The owlet is primarily insectivorous, feeding on insects, small lizards, and occasionally small mammals. It hunts by perching silently and then swooping down on prey. Despite its small size, it is an efficient predator and relies heavily on camouflage and patience.

Social Behavior

This species is mostly solitary, except during the breeding season when pairs form temporarily. It is territorial and avoids human presence. During the day, it roosts quietly, blending perfectly with the forest surroundings.

Vocalization

The Chestnut-backed Owlet has a soft, repetitive “toot-toot” call, often used for communication between mates or to establish territory. Its call is subtle, making the species easy to overlook even when present.

🥚 Breeding & Nesting
Breeding Season

Breeding is believed to occur between January and May, though field data is limited due to its elusive nature.

Nesting

It nests in tree cavities, preferring old and mature trees. No elaborate nests are constructed, with the species relying entirely on natural hollows for laying eggs and raising chicks.

Eggs & Chicks

Typically, 2–3 eggs are laid. The female incubates the eggs while the male provides food. Both parents feed the chicks, which remain in the nest cavity until fully feathered and able to fly.

⚠ Conservation Status

Listed as Near Threatened due to habitat destruction, deforestation, and forest fragmentation. Its dependence on undisturbed wet-zone forests makes rainforest conservation critical for this endemic species.

📸 My Wildscape Encounter

I observed the Chestnut-backed Owlet in the Sinharaja Rainforest, guided by Mr. Gayan Madhushanka. Using my Canon 80D paired with a 400 mm lens, I captured this elusive owl as it quietly roosted among dense branches.

The encounter emphasized the importance of patience, minimal disturbance, and careful observation in photographing small, secretive rainforest birds. Special thanks to Mr. Gayan Madhushanka for making this Wildscape experience possible.