NT
Olive-headed Weaver Ploceus olivaceiceps



Taxonomy

Taxonomic note

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
Dowsett, R. J.; Forbes-Watson, A. D. 1993. Checklist of birds of the Afrotropical and Malagasy regions. Tauraco Press, Li
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Near Threatened A2c+3c+4c
2012 Near Threatened A2c+3c+4c
2008 Near Threatened A2c; A3c; A4c
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 734,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor inferred 0
Population trend Decreasing 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 - - -
Largest subpopulations 100 - - -
Generation length (yrs) 4 - - -

Population justification: The total population was estimated at 20,000 pairs in 1998, roughly equating to 60,000 individuals.

Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Malawi N Extant Yes
Mozambique N Extant Yes
Tanzania N Extant Yes
Zambia N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Malawi South Viphya Forest Reserve
Malawi Mtangatanga and Perekezi Forest Reserves
Malawi Kasungu National Park
Malawi Nkhotakota Wildlife Reserve
Malawi Ntchisi Mountain Forest Reserve
Malawi Dzalanyama Forest Reserve
Malawi Namizimu Forest Reserve
Malawi Liwonde Hills Forest Reserve
Mozambique Panda Brachystegia woodlands
Mozambique Mount Namuli
Mozambique Furancungo woodlands
Mozambique Njesi plateau
Tanzania Selous Game Reserve
Tanzania Umalila Mountains
Zambia Lukususi National Park

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Savanna Dry major resident
Altitude 0 - 1700 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 Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species mortality
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, Ecosystem conversion

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - - International Non-trivial Recent

Recommended citation
BirdLife International (2020) Species factsheet: Ploceus olivaceiceps. Downloaded from http://www.birdlife.org on 28/09/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/09/2020.