The Biak whistler is a species of bird in the family Pachycephalidae. It is endemic to Biak in Indonesia.
Region
Biak Island (Papua Province, Indonesia)
Typical Environment
The Biak whistler inhabits lowland and foothill forests, including primary forest, tall secondary growth, and forest edge. It forages through the mid-story and understory, often along vine tangles and leafy branches. It can occur in lightly disturbed areas and overgrown plantations, provided there is sufficient tree cover. Dense scrub and garden edges near forest tracts may also be used.
Altitude Range
Sea level to 600 m
Climate Zone
Tropical
Ease of Keeping
Beginner friendly: 1/5
This whistler is restricted to Biak Island, Indonesia, where it is most often heard before it is seen thanks to its clear, melodious whistles. It readily uses secondary growth and forest edges, which helps it persist in modified landscapes. However, extensive logging or forest clearance can reduce suitable habitat. Its strong voice makes it a key soundscape species in Biak’s lowland forests.
Temperament
shy but vocal
Flight Pattern
short rapid wingbeats between perches
Social Behavior
Usually seen singly or in pairs, sometimes with mixed-species flocks. Pairs are territorial in the breeding season and build a neat cup nest suspended in low to mid-level branches. Both sexes likely share in parental care. Outside breeding, it forages quietly while keeping to cover.
Migratory Pattern
Resident
Song Description
A rich series of clear, whistled phrases delivered from mid-canopy perches. Songs are repeated with slight variations and carry well through the forest. Calls include sharp chips and soft contact notes.
Plumage
Olive-green upperparts with a greyish head and bright yellow underparts; throat often paler to whitish with subtle edging. Plumage appears clean and smooth, with minimal streaking. Bill is stout and slightly hooked at the tip.
Diet
Feeds mainly on insects such as beetles, caterpillars, and other arthropods gleaned from foliage and twigs. It occasionally takes spiders and small invertebrates from bark crevices. Small fruits and berries may be eaten opportunistically, especially in edge habitats.
Preferred Environment
Forages in the understory to mid-story of forest and tall secondary growth. Frequently works along edges, vine tangles, and leafy branches where prey is abundant. Will also visit semi-open areas adjacent to forest.
