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

Taxonomic note

Previously listed as Turdinus crassus (del Hoyo and Collar 2016) but Cai et al. (2019) found it more closely related to Malacocincla and revived the genus Gypsophila for this and allied species. Formerly listed as Napothera crassa (Sibley and Monroe 1990, 1993). See G. brevicaudata. Monotypic.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2021. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip.

Population justification: The global population size has not been quantified, but the species is described as uncommon in Sabah, common in mount Kinabalu National Park and Gunung Niut Nature Reserve (del Hoyo et al. 2007). This species is considered to have a high dependency on forest habitat, and tree cover is estimated to have declined by 5.9% within its mapped range over the past three generations (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). It is therefore tentatively suspected that this rate of cover loss may have led to a decline of between 1-19% in the species' population size over the same time frame, with a best estimate of reduction being 5-9%.

Trend justification:   .

Recommended citation
BirdLife International (2024) Species factsheet: Mountain Wren-babbler Gypsophila crassa. Downloaded from https://datazone.birdlife.org/species/factsheet/mountain-wren-babbler-gypsophila-crassa on 23/11/2024.
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 23/11/2024.