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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.

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

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type	continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	734,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	poor	inferred	-
Population trend	decreasing	-	suspected	-
Generation length	4 years	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

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	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Malawi	extant	native	yes
Mozambique	extant	native	yes
Tanzania	extant	native	yes
Zambia	extant	native	yes

Country/Territory	IBA Name
Malawi	Dzalanyama Forest Reserve
Malawi	Kasungu National Park
Malawi	Liwonde Hills Forest Reserve
Malawi	Mtangatanga and Perekezi Forest Reserves
Malawi	Namizimu Forest Reserve
Malawi	Nkhotakota Wildlife Reserve
Malawi	Ntchisi Mountain Forest Reserve
Malawi	South Viphya Forest Reserve
Mozambique	Furancungo woodlands
Mozambique	Panda Brachystegia woodlands
Tanzania	Selous Game Reserve
Tanzania	Umalila Mountains
Zambia	Lukususi National Park

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Savanna	Dry	major	resident
Altitude	0 - 1700 m	Occasional altitudinal limits

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

Purpose	Scale
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Olive-headed Weaver Ploceus olivaceiceps. Downloaded from https://datazone.birdlife.org/species/factsheet/olive-headed-weaver-ploceus-olivaceiceps on 22/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 22/11/2024.