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Red-naped Trogon Harpactes kasumba
BirdLife is updating this factsheet for the 2016 Red List
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This species occurs in lowland forests in a region experiencing rapid deforestation through logging and conversion to agriculture. Although it may tolerate very low-intensity logging, it is likely to be declining moderately rapidly across much of its range, and it is therefore considered Neat Threatened.

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
Harpactes kasumba is confined to the Sundaic lowlands, where it is known from peninsular Thailand, Sabah, Sarawak and Peninsular Malaysia, Singapore (formerly), Kalimantan, Indonesia and Brunei (BirdLife International 2001). It occurs at low densities even in optimal habitat.

Population justification
The global population size has not been quantified, but the species is described as rare in Thailand, fairly common in Peninsular Malaysia, locally fairly common on Sumatra, rather scarce in Sarawak and uncommon in Tanjung Putting National Park, Kalimantan (del Hoyo et al. 1999).

Trend justification
This lowland forest species is suspected to be in decline at a moderately rapid rate, owing to on-going habitat loss and degradation throughout its range.

This species occurs mainly in primary or lightly logged lowland evergreen forests. It is most abundant below 600 m, but occurs occasionally up to 1,200 m in montane dipterocarp forest on Borneo. It is also recorded in peatswamp forest, as well as logged areas and even cocoa plantations.

Rates of forest loss in the Sundaic lowlands have been extremely rapid, owing partly to the escalation of illegal logging and land conversion, with deliberate targeting of all remaining stands of valuable timber including those inside protected areas. Forest fires have also had a damaging effect (particularly in 1997-1998).

Conservation Actions Underway
No targeted conservation actions are known for this species, although it occurs in a number of protected areas.

Conservation Actions Proposed
Conduct ecological studies to improve understanding of this species's habitat requirements. In particular, studies should aim to determine levels of tolerance of secondary habitats, particularly in areas where primary forests are completely removed. Repeat surveys across the range to estimate population size and trends. Improve the management of protected areas within the species's range. Increase the area of suitable habitat that has protected status. Implement measures to reduce the number and severity of forest fires.

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

del Hoyo, J.; Elliott, A.; Sargatal, J. 1999. Handbook of the Birds of the World, vol. 5: Barn-owls to Hummingbirds. Lynx Edicions, Barcelona, Spain.

del Hoyo, J.; Elliott, A.; Sargatal, J. 2001. Handbook of the Birds of the World, vol. 6: Mousebirds to Hornbills. Lynx Edicions, Barcelona, Spain.

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., Gilroy, J., Taylor, J.

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

Recommended citation
BirdLife International (2016) Species factsheet: Harpactes kasumba. Downloaded from on 28/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 28/10/2016.

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 - Red-naped trogon (Harpactes kasumba) 0

Key facts
Current IUCN Red List category Near Threatened
Family Trogonidae (Trogons)
Species name author (Raffles, 1822)
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 989,000 km2
Country endemic? No
Links to further information
- Additional Information on this species