LC
Bornean Whistler Pachycephala hypoxantha



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2018 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 552,000
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 6.7 - - -

Population justification: The global population size has not been quantified, but the species is described as common in most of its range, especially at higher elevations (del Hoyo et al. 2007).

Trend justification:

The species is tentatively assessed as being in decline due to habitat loss per Tracewski et al. (2016).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Indonesia N Extant Yes
Malaysia N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Malaysia Lanjak Entimau Wildlife Sanctuary
Malaysia Crocker Range
Malaysia Mount Kinabalu
Malaysia Trus Madi Range
Malaysia Maliau Basin Conservation Area
Malaysia Tanjung Datu-Samunsam Protected Area
Malaysia Gunung Pueh
Malaysia Bungo Range
Malaysia Gunung Penrissen
Malaysia Hose-Laga mountains
Malaysia Baleh headwaters
Malaysia Danum-Linau
Malaysia Usun Apau plateau
Malaysia Dulit Range
Malaysia Mulu - Buda Protected Area
Malaysia Kelabit Highlands
Indonesia Gunung Niut-Poteng
Indonesia Ulu Telen
Indonesia Ulu Barito

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2020) Species factsheet: Pachycephala hypoxantha. Downloaded from http://www.birdlife.org on 29/10/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 29/10/2020.