• 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
-	B1ab(iii)	B1ab(iii); D1+2

Red List history

Year	Category	Criteria
2018	Endangered	B1ab(iii)
2016	Endangered	B1ab(iii)
2013	Endangered	B1ab(iii)
2012	Endangered	B1ab(iii)
2008	Endangered	B1a+b(iii); D1
2006	Endangered
2004	Endangered
2000	Endangered
1996	Critically Endangered
1994	Critically Endangered
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,300 km2	medium
Number of locations	2-5	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	330 mature individuals	medium	estimated	2006
Population trend	increasing	good	estimated	-
Rate of change over the past 10 years/3 generations (longer of the two periods)	50-100%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	50-100%	-	-	-
Generation length	10.1 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The global population in 2006 was c.500 individuals (Unshan 2007), equivalent to c.330 mature individuals.

Trend justification: In 1981, only seven birds (including four adults) were known in the wild. By 2002, the wild population numbered 140 birds. The most recent population estimate is of c.500 individuals (Su Unshan 2007a), suggesting a very rapid increase (owing at least in part to conservation efforts), even though the distribution and population of this species is clearly now better known.

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

Country/Territory	IBA Name
China (mainland)	Yang Xian and neighbouring area

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Arable Land	major	non-breeding
Forest	Temperate	suitable	breeding
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	major	non-breeding
Wetlands (inland)	Permanent Freshwater Marshes/Pools (under 8ha)	major	non-breeding
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	suitable	non-breeding
Altitude	470 - 1300 m	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
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Whole (>90%)		No decline		Past Impact
		Stresses Ecosystem degradation
Natural system modifications	Other ecosystem modifications	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion, Reduced reproductive success
Pollution	Agricultural & forestry effluents - Type Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Ecosystem degradation

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Asian Crested Ibis Nipponia nippon. Downloaded from https://datazone.birdlife.org/species/factsheet/asian-crested-ibis-nipponia-nippon on 27/12/2024.
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 27/12/2024.