• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	B1ab(ii,iii)	B1ab(ii,iii)+2ab(ii,iii); D2

Red List history

Year	Category	Criteria
2022	Endangered	B1ab(ii,iii)
2016	Endangered	C2a(ii)
2012	Endangered	C2a(ii)
2008	Endangered	C2a(ii)
2004	Endangered
2000	Endangered
1996	Vulnerable
1994	Vulnerable
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,900 km2	medium
Area of Occupancy (breeding/resident)	1,084 km2
Number of locations	1	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2000-4000 mature individuals	medium	inferred	1985
Population trend	decreasing	medium	suspected	2016-2026
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-10%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-10%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-10%	-	-	-
Generation length	3.4 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population was estimated to be not more than 1,000-2,000 pairs in the early 1980s (Collar and Stuart 1985). No recent population assessments have been undertaken, however the population is inferred to be declining owing to continuing woodland clearance and selective and illegal logging (Craig 2020). Data from Global Forest Watch (2021, using Hansen et al. [2013] data and methods disclosed therein) suggests that this forest loss has been occurring for some time. Therefore, the population is inferred to still be less than 2,000 pairs, or 4,000 mature individuals. The population size is tentatively placed in the band 2,000-4,000 mature individuals, although clarification is needed.

Trend justification: The population is suspected to be declining at a moderate rate in line with the clearance and degradation of its forest habitat. Between 2009-2019, the species' range experienced a 4.1% reduction in forest cover (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). The likely rate of past decline is therefore suspected to be in the band of 1-10%. However, the most serious threat to this species is drought. Over the past two years this threat is believed to have prevented any breeding events from occurring, as the species relies on very specialised seasonal wetlands (F. Ng'weno in litt. 2022). If this drought persists it has the potential to severely threaten the entire population, and therefore future declines could be significantly higher.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Kenya	extant	native	yes

Country/Territory	IBA Name
Kenya	Arabuko-Sokoke Forest
Kenya	Dakatcha Woodland

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	major	resident
Wetlands (inland)	Seasonal/Intermittent/Irregular Rivers/Streams/Creeks	major	breeding
Altitude	0 - 200 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	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
Climate change & severe weather	Droughts	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Slow, Significant Declines		Medium Impact: 7
		Stresses Species disturbance, Ecosystem degradation, Species mortality

Purpose	Scale
Food - human	subsistence

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Recommended citation
BirdLife International (2024) Species factsheet: Clarke's Weaver Ploceus golandi. Downloaded from https://datazone.birdlife.org/species/factsheet/clarkes-weaver-ploceus-golandi on 23/12/2024.
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 23/12/2024.