• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note
Previously lumped with G. crispifrons (Handbook of the Birds of the World and BirdLife International 2021) but despite minimal plumage differences (annamensis being slightly greyer), now split on the basis of deep genetic divergence and vocal differences (Gwee et al. 2021). Monotypic.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2023. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 8. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v8_Dec23.zip.

Population justification: The population size of this species has not been quantified, although it occurs over a relatively wide area in a habitat where it can be found in relatively high densities with little competition (eBird 2023). In Thailand, Treesucon and Limparungpatthanakij (2018) described as 'locally common' a species concept that combines G. crispifrons sensu stricto and G. annamensis. In Vietnam, described as 'locally fairly common' (Craik and Lê 2018). Thus while the population size is not estimated here, it is considered unlikely to be especially small.

Trend justification: No repeat surveys have been undertaken of this species from which to estimate directly its population trend. However, using habitat extent as a proxy, it is inferred to be stable in the absence of other plausible threats. Remote sensing data indicate only minimal habitat loss in its range, amounting to less than 2% loss over the past three generations (11.6 years: 2011-2023) (Global Forest Watch 2023, based on data from Hansen et al. [2013] and methods disclosed therein). Although this value does not account for habitat degradation, this species is evidently adaptable to some degradation, and occurs at sites that have been heavily modified and are fragmented (eBird 2023). In the absence of any data to the contrary, there is no evidence that this species has declined over the past three generations and its dependence on rugged limestone karsts is likely to protect it from future declines.

Recommended citation
BirdLife International (2024) Species factsheet: Annamite Limestone-babbler Gypsophila annamensis. Downloaded from https://datazone.birdlife.org/species/factsheet/annamite-limestone-babbler-gypsophila-annamensis on 26/12/2024.
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 26/12/2024.