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

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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2023	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	91,500 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	3.8 years	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The global population size has not been quantified, but the species is reported to be abundant to not uncommon locally (del Hoyo et al. 1997). It is assumed that there are multiple subpopulations, with at least those on Bioko separate from the mainland populations.

Trend justification: There are no direct assessments of the population trend of this species. It is highly forest-dependent, hence the abundance is inferred to be directly related to the area of forest cover within the range of the species. There has been little forest cover loss within the range of the species with approximately 2% having been lost over the three generation period up to and including 2021 (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). This rate has increased slightly in recent years, such that a forward projection of the mean annual rate of forest cover loss from the most recent five years results in a suspected 3% loss over the future three generations. On a precautionary basis the population is suspected to be declining at a slow rate.

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

Country/Territory	IBA Name
Cameroon	Bakossi mountains
Cameroon	Bali-Ngemba Forest Reserve
Cameroon	Mbi Crater Faunal Reserve - Mbingo forest
Cameroon	Mont Manengouba
Cameroon	Mount Cameroon and Mokoko-Onge
Cameroon	Mount Kupe
Cameroon	Mount Mbam
Cameroon	Mount Oku
Cameroon	Mount Rata and Rumpi Hills Forest Reserve
Equatorial Guinea	Basilé Peak National Park
Nigeria	Gashaka-Gumti National Park
Nigeria	Ngel-Nyaki Forest Reserve
Nigeria	Obudu Plateau

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1000 - 2500 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Shifting agriculture	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Cameroon Olive-pigeon Columba sjostedti. Downloaded from https://datazone.birdlife.org/species/factsheet/cameroon-olive-pigeon-columba-sjostedti 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.