Justification of Red List Category
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
The global population size has not been quantified, but the species is described as common in Hong Kong and Java and fairly common in southern China and south-east Asia (del Hoyo et al. 2005). Brazil (2009) has estimated the population in China at c.10,000-100,000 breeding pairs.
The population is suspected to be in decline owing to heavy trapping pressure, although the species remains common (del Hoyo et al. 2005).
Text account compilers
Ekstrom, J., Butchart, S.
BirdLife International (2023) Species factsheet: Pycnonotus aurigaster. Downloaded from http://datazone.birdlife.org/species/factsheet/sooty-headed-bulbul-pycnonotus-aurigaster on 28/05/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 28/05/2023.