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Udzungwa Forest-partridge Xenoperdix udzungwensis

IUCN Red List Criteria

Critically Endangered  
Endangered B1ab(v) 
Vulnerable D2 

IUCN Red List history

Year Category
2012 Endangered
2008 Endangered
2007 Endangered
2004 Endangered
2000 Vulnerable
1996 Endangered
1994 Endangered
1988 Not Recognised

Species attributes

Migratory status not a migrant Forest dependency High
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 580 medium
Number of locations 3 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 2000-2700 medium Estimated 2007
Population trend Stable medium -
Number of subpopulations 2 - - -
Largest subpopulation - - -
Generation length (yrs) 3.9 - - -
Population justification: Dinesen et al. (2001) estimate the population to be 3,700 individuals based on the species's range and density in the Ndundulu forest. Butynski and Ehardt (2003) have suggested that this estimate may be too high as in other parts of its range it appears significantly less common. The population may be best estimated in the range 3,000-4,000 individuals (L. Hansen in litt. 2007), roughly equating to 2,000-2,700 mature individuals.
Trend justification: The population is estimated to be stable, with large fluctuations between years (L. Hansen in litt. 2007).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Tanzania Native Extant      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Tanzania Rubeho Mountains site factsheet
Tanzania Udzungwa Mountains site factsheet
Tanzania Udzungwa National Park site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Altitude 1300 - 2400 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 Decline Medium Impact:
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Species mortality
Human intrusions & disturbance Recreational activities Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species disturbance, Ecosystem degradation
Human intrusions & disturbance Work & other activities Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Species disturbance
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species mortality
Natural system modifications Fire & fire suppression / Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact:
Stresses
Ecosystem degradation, Ecosystem conversion

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Xenoperdix udzungwensis. Downloaded from http://www.birdlife.org on 12/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 12/07/2014.

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.

Key facts
Current IUCN Red List category Endangered
Family Phasianidae (Grouse, pheasants and partridges)
Species name author Dinesen, Lehmberg, Svendsen, Hansen et al., 1994
Population size 2000-2700 mature individuals
Population trend Stable
Distribution size (breeding/resident) 580 km2
Country endemic? Yes
Links to further information
- Summary information on this species