• 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. 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	Near Threatened	B1ab(ii,iii,v);C1
2012	Near Threatened	B1ab(ii,iii,v);C1
2008	Near Threatened	B1a+b(iii,v); C1
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Near Threatened
1988	Near Threatened

Migratory status	full migrant	Forest dependency	high
Land-mass type	shelf island	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,150,000 km2	medium
Area of Occupancy (breeding/resident)	8,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	poor	suspected	-
Generation length	3.95 years	-	-	-
Number of subpopulations	3	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The population has not been quantified and an exercise to do so would be greatly hampered by its movements between islands. On islands where the majority of tree cover has been removed it is expectedly rare, but on others it can be quite common (eBird 2022). The population of C. j. nitens has previously been estimated to number 100 in 2014 (Ando et al. 2014) however it is recently reported to be commoner following feral cat control (O. Chikara in litt. 2020).

Trend justification: While the number of recorded sites fell between atlas efforts in 1997-2000 and 2016-2021 (from 25 to 22) (Bird Breeding Distribution Survey Committee 2021) this is not thought to be indicative of global population declines. In the absence of hunting and logging pressures and recent indication that C. j. nitens (which can represent only a small percentage of the global population) is no longer decreasing thanks to conservation effort (O. Chikara in litt. 2022), the population is suspected to be stable.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
China (mainland)	extant	vagrant
Japan	extant	native	yes
Russia	extant	vagrant			yes
South Korea	extant	native	yes
Taiwan, China	extant	vagrant

Country/Territory	IBA Name
Japan	Amami islands
Japan	Aogashima island
Japan	Chichijima islands
Japan	Danjo islands
Japan	Hachijojima island
Japan	Hahajima islands
Japan	Kanmurijima and Kutsujima islets
Japan	Kazan-retto islands
Japan	Kii Nagashima islets
Japan	Koshikijima islands
Japan	Kozushima island
Japan	Mikurajima island
Japan	Miyakejima island
Japan	Mukojima islands
Japan	Niijima and Shikinejima Islands
Japan	Oki islands
Japan	Okinoshima and Koyajima islets
Japan	Oshima island
Japan	Seinan islands
Japan	Tokara islands
Japan	Toshima island
Japan	Tsushima islands
Japan	Yaeyama islands
Japan	Yakushima and Tanegashima islands
Japan	Yambaru, northern Okinawa forest

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	breeding
Forest	Subtropical/Tropical Moist Lowland	major	non-breeding
Forest	Temperate	major	non-breeding
Forest	Temperate	major	breeding
Altitude		Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Minority (<50%)		Negligible declines		Past Impact
		Stresses Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Minority (<50%)		Negligible declines		Past Impact
		Stresses Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases	Problematic native species/diseases - Felis catus	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Species disturbance, Species mortality
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Majority (50-90%)		Slow, Significant Declines		Past Impact
		Stresses Species disturbance, Ecosystem degradation, Ecosystem conversion, Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Japanese Woodpigeon Columba janthina. Downloaded from https://datazone.birdlife.org/species/factsheet/japanese-woodpigeon-columba-janthina on 22/12/2024.
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 22/12/2024.