Justification of Red List Category
This species is 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). The population trend is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds 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 it is believed to be large as the species is described as locally common to abundant in much of its range (Fry and Keith 2004).
The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes.
The species may be threatened to some extent by habitat destruction and fragmentation
Text account compilers
Butchart, S., Ekstrom, J., Pilgrim, J. & Westrip, J.
BirdLife International (2022) Species factsheet: Zosterops mbuluensis. Downloaded from http://www.birdlife.org on 01/10/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 01/10/2022.