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

Taxonomic note

Batrachostomus javensis (del Hoyo and Collar 2014) was previously split as B. javensis and B. affinis following Sibley and Monroe (1990, 1993). B. pygmaeus was described as new to science by Alviola (1997) but is regarded as an example of B. javensis following Holyoak (1999) and Dickinson (2003).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Population justification: The global population size has not been quantified, but the species is reported to be scarce throughout much of its range (del Hoyo et al. 1999), however it is unobtrusive and likely to be more common than records suggest. This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 17.7% within its mapped range over the past three generations (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.

Trend justification:   .

Recommended citation
BirdLife International (2024) Species factsheet: Horsfield's Frogmouth Batrachostomus javensis. Downloaded from https://datazone.birdlife.org/species/factsheet/horsfields-frogmouth-batrachostomus-javensis on 25/12/2024.
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 25/12/2024.