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Diard's Trogon Harpactes diardii

Justification
This species is considered Near Threatened, as it is likely to be declining moderately rapidly owing to the wholesale clearance of lowland forest habitats throughout its range.

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 diardii occurs in the Sundaic lowlands, from peninsular Thailand, Sabah, Sarawak and Peninsular Malaysia, Singapore (formerly), Kalimantan and Sumatra, Indonesia and Brunei (BirdLife International 2001).

Population justification
The global population size has not been quantified, but the species is described as fairly common in Peninsular Malaysia and Borneo, uncommon in Thailand and rare in Way Kambas National Park, Sumatra (del Hoyo et al. 1999).

Trend justification
A  moderately rapid population decline is suspected to be occurring, owing to the continuing rapid loss of lowland forest habitats across the species's range.

Ecology
This species occurs in the middle and lower storeys of primary and logged evergreen forests in lowlands and hills. It is mainly found below 600 m, although there are records up to 1,200 m on Borneo. It has also been recorded from peatswamp forest, luxuriant secondary forest and even cocoa plantations (in areas with adjacent forest cover).

Threats
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 determine habitat requirements and 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.

References
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 (2014) Species factsheet: Harpactes diardii. Downloaded from http://www.birdlife.org on 23/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/09/2014.

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 - Diard's trogon (Harpactes diardii) 0

Key facts
Current IUCN Red List category Near Threatened
Family Trogonidae (Trogons)
Species name author (Temminck, 1832)
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 2,220,000 km2
Country endemic? No
Links to further information
- Additional Information on this species