The hairy-backed bulbul is a songbird species in the bulbul family, Pycnonotidae. It is the sole species contained within the monotypic genus Tricholestes. It is found on the Malay Peninsula, Sumatra, and Borneo. Its natural habitat is subtropical or tropical moist lowland forests.
Region
Sundaland (Malay Peninsula, Sumatra, Borneo)
Typical Environment
Occurs in primary and secondary lowland evergreen rainforest, including tall dipterocarp forests and forest edges. It favors the midstory and lower canopy, often near fruiting trees and along riparian corridors. The species tolerates lightly logged forest but declines in heavily degraded habitats. It is absent from open country and relies on contiguous forest cover.
Altitude Range
0–1200 m
Climate Zone
Tropical
Ease of Keeping
Beginner friendly: 1/5
The hairy-backed bulbul is the only species in the monotypic genus Tricholestes. Its name comes from distinctive hair-like filoplumes on the upper back that give it a slightly scruffy look. It often joins mixed-species flocks in the forest midstory, where it forages quietly. Despite habitat loss in parts of its range, it remains fairly widespread in Sundaland lowland forests.
Temperament
quiet, shy, and often unobtrusive
Flight Pattern
short rapid wingbeats between perches
Social Behavior
Usually seen singly, in pairs, or in small family groups, and frequently associates with mixed-species foraging flocks. Builds a small cup-shaped nest suspended in low to mid-level vegetation. Both parents likely participate in caring for the young.
Migratory Pattern
Resident
Song Description
Song consists of thin, high-pitched whistles and sibilant phrases delivered from concealed perches. Calls include soft chips and sharp notes used to keep contact within flocks.
