Justification of Red List Category
This forest-dependent species is listed as Near Threatened because it is assumed to be experiencing a moderately rapid decline owing to the extensive loss of lowland forests from large areas of Borneo. It is not considered more threatened because it occurs in lower montane forest.
The global population size has not been quantified, but the species is described as possibly not common, although little is known (Cleere 1998).
Although very poorly known, this species is probably declining at a moderately rapid rate, in line with forest clearance on Borneo. As it occurs at higher elevations it may have escaped more rapid declines.
Batrachostomus harterti is restricted to the Bornean Mountains Endemic Bird Area. Discounting its erroneous listing for Tanjung Puting National Park, it is known by only eight specimens from four areas in Sarawak, Malaysia, and one in West Kalimantan, Indonesia. The range and population have not been thoroughly investigated.
The few available reliable records indicate that it favours hill and lower montane forest at 300-1,250 m (Orenstein et al. 2010).
There is steady habitat loss on Mt Dulit. Typically logging and agricultural expansion threaten forest habitats in Borneo.
Conservation Actions Underway
None are known.
Text account compilers
Benstead, P., Bird, J., Khwaja, N., Taylor, J.
BirdLife International (2019) Species factsheet: Batrachostomus harterti. Downloaded from http://www.birdlife.org on 17/11/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/11/2019.