Justification of Red List category
Although the species has a restricted range, it is not believed to approach the thresholds for Vulnerable under the range size criterion which also requires 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 suspected to be stable, and hence does not 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 and hence does not 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.
Population justification
The population size of this species has not been quantified, but it is described as locally common to abundant (Dutson 2011, van Balen 2021).
Trend justification
Remote sensing data indicate that forest loss is ongoing within the range, occurring at a rate equivalent to c.11% within ten years (Global Forest Watch 2023, using data from Hansen et al. [2013] and methods disclosed therein). However, this species is found in all habitats including forest edge and gardens, and is equally abundant in primary forest and taller secondary growth (Dutson 2011, van Balen 2021). As such, the species may not be affected detrimentally by forest loss and is tentatively suspected to be stable.
The species is endemic to the New Georgia group of the Solomon Islands, including Kolombangara, Vonavona, Kohinggo, New Georgia, Vangunu and Nggatokae.
Text account compilers
Vine, J.
Recommended citation
BirdLife International (2025) Species factsheet: Solomons White-eye Zosterops kulambangrae. Downloaded from
https://datazone.birdlife.org/species/factsheet/solomons-white-eye-zosterops-kulambangrae on 16/01/2025.
Recommended citation for factsheets for more than one species: BirdLife International (2025) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 16/01/2025.