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Large Frogmouth Batrachostomus auritus
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This forest-dependent species is listed as Near Threatened because it is assumed to be undergoing a moderately rapid decline owing to the extensive loss of lowland forests from large areas of the Sundaic lowlands.

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

Distribution and population
Batrachostomus auritus occurs very sparsely in south peninsular Thailand; Sabah, Sarawak and Peninsular Malaysia; Kalimantan (including the Natuna and Labuan islands) and Sumatra, Indonesia, and Brunei. It is an elusive and poorly known species, but appears to be genuinely rare or uncommon and is almost certainly declining owing to the destruction of lowland forest.

Population justification
The global population size has not been quantified, but the species is described as extremely rare in Thailand, rare in Peninsular Malaysia and local and very uncommon in Borneo (Cleere 1998).

Trend justification
Forest destruction in the Sundaic lowlands of Indonesia has been extensive, and the situation is little different in Thailand and Malaysia, but its ability to persist in regenerating and secondary growth habitats means that it is probably not suffering more than a moderately rapid decline.

It occurs in lowland dipterocarp forest to at least 250 m, perhaps 1,000 m. A nest has been described from a branch fork c.4 m from the ground, from which a chick hatched in mid-March (Cheong and Li 2010).

Rates of forest loss in the Sundaic lowlands have been extremely rapid (Kalimantan lost nearly 25% of its evergreen forest during 1985-1997, and Sumatra lost almost 30% of its 1985 cover), because of a variety of factors, including the escalation of logging and land conversion, with deliberate targeting of all remaining stands of valuable timber including those inside protected areas, plus forest fires (particularly in 1997-1998).

Conservation Actions Underway
It is known from a number of protected areas, including Taman Negara National Park in Peninsular Malaysia, Way Kambas National Park in Sumatra, and Danum Valley and Gn Mulu National Parks in Borneo (Cheong and Li 2010).
Conservation Actions Proposed
Protect areas of lowland forest within the species's range. Enforce restrictions on agricultural encroachment and logging within such protected areas. Estimate population trends by calculating rates of forest loss within its range using satellite imagery and remote sensing techniques.

BirdLife International. 2001. Threatened birds of Asia: the BirdLife International Red Data Book. BirdLife International, Cambridge, U.K.

Cleere, N.; Nurney, D. 1998. Nightjars: a guide to nightjars and related nightbirds. Pica Press, Robertsbridge, U.K.

Cleere, N.; Nurney, D. 1998. Nightjars: a guide to nightjars and related nightbirds. Pica Press, Robertsbridge, U.K.

Tam Gim Cheong; Yong Ding Li. 2010. Observations on the nesting of the Large Frogmouth Batrachostomus auritis in Taman Negara National Park, peninsular Malaysia. BirdingASIA: 37-43.

Further web sources of information
Detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001).

Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Benstead, P., Bird, J., Khwaja, N., Taylor, J.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2016) Species factsheet: Batrachostomus auritus. Downloaded from on 27/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 27/10/2016.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Additional resources for this species

ARKive species - Large frogmouth (Batrachostomus auritus) 0

Key facts
Current IUCN Red List category Near Threatened
Family Podargidae (Frogmouths)
Species name author (Gray, 1829)
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 566,000 km2
Country endemic? No
Links to further information
- Additional Information on this species