The Biak triller is a species of bird in the family Campephagidae. It is found on Biak. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical mangrove forests. It was formerly considered a subspecies of the black-browed triller, but was split as a distinct species by the IOC in 2021.
Region
Schouten Islands, Cenderawasih Bay
Typical Environment
Confined to Biak and nearby islets off the northwestern coast of New Guinea. It inhabits subtropical and tropical moist lowland forests, including primary and well-structured secondary forests. The species also occurs in mangrove forests and along forest edges and riverine corridors. It typically forages in the mid to upper canopy and tolerates some disturbance where tall trees remain.
Altitude Range
Sea level to 600 m
Climate Zone
Tropical
Ease of Keeping
Beginner friendly: 2/5
Endemic to Biak Island off the north coast of New Guinea, this triller favors lowland forest and mangroves. It was formerly treated as a subspecies of the Black-browed Triller but was elevated to species by the IOC in 2021. Like other trillers, it forages actively in the canopy, often in small family groups. Ongoing habitat alteration on Biak may affect its localized populations.
Temperament
alert and somewhat shy
Flight Pattern
short rapid wingbeats with brief glides
Social Behavior
Usually seen singly, in pairs, or in small family parties moving through the canopy. Forms loose mixed-species foraging flocks at times. Nests are shallow cups placed on high horizontal branches. Both parents are believed to share incubation and chick-rearing duties.
Migratory Pattern
Resident
Song Description
A series of clear, fluty trills interspersed with sharp chip notes. Calls can be repetitive and carry well through the canopy, often given from exposed perches.
