Bornean Frogmouth Batrachostomus mixtus


Justification of Red List Category
This forest-dependent species is listed as Near Threatened because it is suspected to be undergoing a moderately rapid decline owing to the extensive loss of forests within its range.  It is not considered more threatened because it occurs in lower montane forest where habitat loss has been less rapid.

Population justification
The global population size has not been quantified, but the species was described as probably not common (Cleere 1998).  However, it was found to be locally fairly common on Mt. Trus Madi, Sabah in 2010 (B. Harris in litt. 2016, D. L. Yong in litt. 2016) and at sites in the Kelabit highlands, Sarawak (D. L. Yong in litt. 2016).

Trend justification
Forest destruction in the lowlands of Borneo has been extensive, but its occurrence at higher elevations suggests this species is not suffering more than a moderately rapid decline.

Distribution and population

Batrachostomus mixtus is restricted to Sabah and Sarawak, Malaysia, and Kalimantan, Indonesia, where it inhabits lower montane forest (BirdLife International 2001).  It is thought to be locally common (B. Harris in litt. 2016; D. L. Yong in litt. 2016) but is likely to have declined due to forest loss within its range.


It occurs in lower montane forest at 600-1,675 m and may use secondary habitats.


Forest loss has been extensive in Borneo owing to logging operations, agricultural expansion and severe forest fires.

Conservation actions

Conservation Actions Underway
None are known.

Conservation Actions Proposed
Survey specific sites to improve knowledge of the species's ecological requirements and then assess its potential distribution and the likely threats.  Protect areas of suitable habitat and safeguard against threats.


Text account compilers
Benstead, P., Bird, J., Martin, R, Taylor, J., Wheatley, H.

Harris, B., Yong, D.

Recommended citation
BirdLife International (2023) Species factsheet: Batrachostomus mixtus. Downloaded from http://datazone.birdlife.org/species/factsheet/bornean-frogmouth-batrachostomus-mixtus on 06/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 06/06/2023.