Exhibition "In the Forests of Borneo"
Bornean bristlehead
Family: Pityriaseidae
Scientific name: Pityriasis gymnocephala (Temminck, 1835)
Geographic distribution: Malaysia (Borneo)
Pityriasis gymnocephala (Temminck, 1836). Foto di Dixon Lau, Malesia. Licenza: CC BY-NC 4.0
The Bornean Bristlehead is an extraordinary passerine bird, the sole representative of the genus Pityriasis and the monotypic family Pityriasidae. It is the only bird species endemic to Borneo (Sabah, Sarawak, Kalimantan, and Brunei), inhabiting lowland rainforests and peat swamp areas. Easily recognizable, it measures 22–26 cm and displays glossy black plumage, a nearly bare head adorned with yellow-orange bristles, hence the common name “bristlehead”, a crimson throat and legs, and a strong black beak used to feed on small invertebrates and occasionally fruits.
From a taxonomic perspective, its classification has long been enigmatic and debated, shifting among different families before its unique evolutionary lineage was recognized. A social and vocal species, it lives in groups of 6–10 individuals, moving nimbly through the forest canopy while emitting distinctive nasal and croaking calls. Considered vulnerable due to the ongoing destruction of its habitat, the Bornean Bristlehead remains one of the most remarkable and mysterious creatures of this extraordinary tropical island.
Image from the Systematic Catalogue of the Birds of Borneo by Tommaso Salvadori (1874)