Current view: Data table and detailed info
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
Red List history
Migratory status |
unknown |
Forest dependency |
medium |
Land-mass type |
|
Average mass |
- |
Population justification: Impossible to determine. It is known from only two specimens, both taxonomic types, and observations in Brunei from more than 25 years ago (see Collar 2014). If the species is indeed valid, the paucity of records may ostensibly suggest it is very rare, although Pycnonotus bulbuls are rarely so, and the area of lowland forest within this species' range (which is relatively well explored), is vast.
Trend justification: Undetermined. The confusion over its range and taxonomic status, as well as the total absence of data on its breeding biology, precludes the identification of likely threats.
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Blue-wattled Bulbul Pycnonotus nieuwenhuisii. Downloaded from
https://datazone.birdlife.org/species/factsheet/blue-wattled-bulbul-pycnonotus-nieuwenhuisii on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/12/2024.