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LC
Taiwan Partridge Arborophila crudigularis

Justification
This species has been downlisted to Least Concern following new information that indicates its range and population are larger than previously estimated, thus it is not thought to approach the thresholds for Vulnerable under any of the Red List criteria.

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
Arborophila crudigularis is confined to the foothills and mountains of Taiwan (China), where it occurs in broadleaved forest at 100-2,300 m (J. Ko in litt. 2014). The population is thought to number substantially more than 10,000 mature individuals (J. Ko in litt. 2014), but its population trend is unclear. Although it is probably secure inside protected areas, it may be in slow to moderate decline elsewhere, owing to habitat loss and degradation.

Population justification
The global population size has been estimated at substantially more than 10,000 mature individuals (J. Ko in litt. 2014), thus it is placed in the band for 20,000-49,999 mature individuals, which is assumed to equate to c.30,000-75,000 individuals.

Trend justification
There are no data on population trends; however, habitat loss is suspected to be causing a slow to moderate decline in this species's population.

Ecology
It favours thickets and damp undergrowth in broadleaved evergreen forest, foraging in groups of 2-3 birds, and feeding on earthworms, seeds, berries, seedlings, leaves and insects (Madge and McGowan 2002). It breeds in March-August and lays a clutch of 6-8 eggs (Madge and McGowan 2002).

Threats
It is suspected to be declining because of forest loss for timber extraction and conversion to agricultural land, and possibly also because of the use of pesticides.

Conservation Actions Underway
Some 11% of Taiwan is protected, in six national parks and in nature reserves and wildlife sanctuaries, and the species is well represented in these protected areas. Conservation Actions Proposed
Survey to assess its population size. Monitor populations both inside and outside protected areas. Enforce the protection afforded to the species by the national parks.

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

Brazil, M. 2009. Birds of East Asia: eastern China, Taiwan, Korea, Japan, eastern Russia. Christopher Helm, London.

del Hoyo, J.; Elliott, A.; Sargatal, J. 1994. Handbook of the Birds of the World, vol. 2: New World Vultures to Guineafowl. Lynx Edicions, Barcelona, Spain.

IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.1). Available at: http://www.iucnredlist.org. (Accessed: 19 June 2012).

Madge, S.; McGowan, P. 2002. Pheasants, partridges and grouse: including buttonquails, sandgrouse and allies. Christopher Helm, London.

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., Mahood, S., Symes, A. & Taylor, J.

Contributors
Ko, J.

Recommended citation
BirdLife International (2014) Species factsheet: Arborophila crudigularis. Downloaded from http://www.birdlife.org on 23/11/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/11/2014.

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 - Taiwan partridge (Arborophila crudigularis) 0

Key facts
Current IUCN Red List category Least Concern
Family Phasianidae (Pheasants, Partridges, Turkeys, Grouse)
Species name author (Swinhoe, 1864)
Population size 20000-49999 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 22,800 km2
Country endemic? Yes
Links to further information
- Additional Information on this species