VU
Nahan's Partridge Ptilopachus nahani



Taxonomy

Taxonomic note
Ptilopachus nahani (del Hoyo and Collar 2014) was previously placed in the genus Francolinus.

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - B2ab(ii,iii,v)

Red List history
Year Category Criteria
2017 Vulnerable B2ab(ii,iii,v)
2016 Endangered B1ab(ii,iii,v)
2012 Endangered B1ab(ii,iii,v)
2008 Endangered B1a+b(ii,iii,v)
2005 Endangered
2004 Endangered
2000 Endangered
1996 Data Deficient
1994 Data Deficient
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 51,300 medium
Number of locations 6-10 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals medium estimated 2004
Population trend Decreasing medium suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 3.9 - - -

Population justification: Fuller et al. (2004a, 2004b) estimated a population of 44,038 (95% CI: 32,827-59,079) individuals in Uganda. However, the species's distribution also includes localities in the Democratic Republic of the Congo, the inclusion of which may double the known population size (R. Fuller in litt. 2007), therefore the population is placed in the range 50,000-99,999 individuals.

Trend justification: The species's range is known to be in decline where its status has been inferred through changes in habitat extent in Uganda (Fuller et al. 2004b), and its population is suspected to be in decline owing to habitat destruction and hunting pressure, although the likely rate of decline has not been estimated.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Congo, The Democratic Republic of the N Extant Yes
Uganda N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Congo, The Democratic Republic of the Mount Hoyo Reserve
Congo, The Democratic Republic of the Okapi Faunal Reserve
Uganda Budongo Forest Reserve
Uganda Bugoma Central Forest Reserve
Uganda Kibale National Park
Uganda Mabira Forest Reserve
Uganda Semliki National Park

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 500 - 1400 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Reduced reproductive success, Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation
Human intrusions & disturbance Work & other activities Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
Stresses
Species disturbance
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Broussonetia papyrifera Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent
Other household goods - - Non-trivial Recent

Recommended citation
BirdLife International (2019) Species factsheet: Ptilopachus nahani. Downloaded from http://www.birdlife.org on 16/12/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/12/2019.