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 |
not a migrant |
Forest dependency |
high |
| Land-mass type |
shelf island
|
Average mass |
- |
Population justification: The population size of this species has not been quantified, but it is thought to be rather small; it is considered patchily distributed and quite common to scarce where it is present within its range (Schulenberg 2013, Yamagishi and Nakamura 2020). Considering this patchy distribution and its suspected sedentary nature (Yamagishi and Nakamura 2020), several subpopulations are likely present, although further study is needed to confirm this.
Trend justification: Although this species may occur in degraded or secondary forest, it only does so when these habitats are adjacent to primary intact forest (Langrand 1990, Schulenberg 2013). It is therefore considered to be highly dependent on the latter habitat, which is decreasing within its range at a rapid rate (Yamagishi and Nakamura 2020, Global Forest Watch 2024). It is therefore suspected to be decreasing, with a rate of decline which is suspected to be rapid and in step with the loss of its habitat.
Forest cover within the species’ range reduced in extent by 32-34% over the past three generations, and is projected to decrease by approximately 34-36% between 2016 and 2027 (setting 2016 as the start year on account of the fact it was the year of most rapid loss) and, based on the average annual rate of loss over the past 5 years (2018-2023) approximately 28-29% over the next three generations (Global Forest Watch 2024, using Hansen et al. [2013] data and methods disclosed therein). It is suspected that the rate of population reduction is similar to rates of forest cover loss, but the former may be greater because of the additive impacts of habitat fragmentation and degradation (this is supported by findings that show it is sensitive to habitat fragmentation, with its density decreasing in line with the size of habitat parcels (Benjara et al. 2021)). The suspected rate of decline of the population size is therefore placed in the band of 30-40% decline over the past three generations, and 35-45% between 2016 and 2027 and 25-35% over the next three generations.
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Pollen's Vanga Xenopirostris polleni. Downloaded from
https://datazone.birdlife.org/species/factsheet/pollens-vanga-xenopirostris-polleni 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.
