Jungle owlet

The jungle owlet (Glaucidium radiatum), also known as the barred jungle owlet, is a small owl species native to the Indian subcontinent. It is typically found in habitats ranging from scrub forest to deciduous and moist deciduous forests. This owlet is generally detected by its calls, which are most commonly heard at dawn and dusk, though it is also known to call and fly during daylight hours.

Physical Characteristics

This owlet is characterized by its rounded head and finely barred plumage all over. It does not possess a clear facial disk. The wings are brownish, and the tail is narrowly barred in white. The upper parts are dark black-brown with white barring, while the wing coverts may display white and rufous patches. The primaries and secondaries are dark brown with pale chestnut barring. The underside is whitish or pale rufous, barred with black, and features a whitish patch on the chin, upper breast, and center of the abdomen. Its iris is yellow, with greenish bill and tarsi, and black claws.

Behavior and Ecology

The jungle owlet is primarily crepuscular, meaning it is most active during twilight hours. However, it is also known to be active and vocal during the day. Its call is distinctive, described as a rapid series of 'prao' sounds that builds in intensity before abruptly ceasing. During the day, young nestlings can produce tick calls that resemble those of a pale-billed flowerpecker. These owls roost inside tree cavities and, when disturbed, tend to freeze, appearing like a dead tree stump. They may also perch prominently on wires or bask in the morning sun before returning to their roosts. Peak foraging activity occurs about an hour before sunrise and after sunset. Their diet consists of insects, small birds, reptiles, and rodents. While they have been observed capturing small Phylloscopus warblers during the day, their primary hunting times are at dawn and dusk.

Reproduction and Distribution

The breeding season in India typically spans from March to May. Jungle owlets nest in tree hollows, usually at heights between 3 to 5 meters. The typical clutch size is four eggs, though the subspecies G. r. malabaricum from the Western Ghats often lays three eggs. The species is found south of the Himalayas and in parts of the Himalayas up to an elevation of 2,000 meters, with its range extending from Dalhousie in the west to Bhutan in the east. It is also found in Sri Lanka, inhabiting drier forests there, in contrast to the chestnut-backed owlet found in Sri Lanka's wet zone.

There are two recognized subspecies: the nominate form Glaucidium radiatum radiatum, found in the plains of India and Sri Lanka, and Glaucidium radiatum malabaricum, found in the Western Ghats. The latter subspecies is noted for having a shorter tail and showing more brown on its head, and it has been suggested that it may warrant full species status, as has the chestnut-backed owlet (Glaucidium castanonotum) which was once considered a subspecies.