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

Taxonomic note
Apteryx australis, A. mantelli and A. rowi (del Hoyo and Collar 2014) were previously treated as A. australis and A. mantelli (incorporating rowi) following Baker et al. (1995); prior to that all three taxa were lumped as A. australis following Sibley and Monroe (1990, 1993).

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
-	-	D1

Red List history

Year	Category	Criteria
2021	Vulnerable	D1
2017	Vulnerable	D1
2016	Endangered	D
2014	Endangered	D
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	428 km2	medium
Area of Occupancy (breeding/resident)	428 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	350-400 mature individuals	medium	estimated	2019
Population trend	increasing	good	estimated	-
Generation length	10.45 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The 2019 population is estimated to number 500-600 adults (G. Coleman in litt. 2019) and given that some (presumably very old) birds do not breed, the number of mature individuals is estimated to lie in the range 350-400 birds. There is one subpopulation on the west coast of the South Island.

Trend justification: The population has risen rapidly from c.160 birds in 1995 to 500-600 adults in 2019 (G. Coleman in litt. 2019) following intensive captive rearing of eggs and chicks to avoid predation by invasive stoats (H. Robertson in litt. 2016).

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Temperate	major	resident
Altitude	0 - 1000 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Majority (50-90%)		Slow, Significant Declines		Past Impact
		Stresses Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Canis familiaris	Timing		Scope		Severity		Impact
		Past, Likely to Return		Majority (50-90%)		Very Rapid Declines		Past Impact
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Felis catus	Timing		Scope		Severity		Impact
		Past, Likely to Return		Majority (50-90%)		Very Rapid Declines		Past Impact
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Mustela erminea	Timing		Scope		Severity		Impact
		Past, Likely to Return		Majority (50-90%)		Very Rapid Declines		Past Impact
		Stresses Reduced reproductive success, Species mortality
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Past, Likely to Return		Minority (<50%)		Slow, Significant Declines		Past Impact
		Stresses Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Okarito Kiwi Apteryx rowi. Downloaded from https://datazone.birdlife.org/species/factsheet/okarito-kiwi-apteryx-rowi on 23/11/2024.
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 23/11/2024.