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

Taxonomic note

Fregetta maoriana endemic to New Zealand (Brooke 2004), was not listed by Turbott (1990) as it was previously believed to be extinct. Fregetta maoriana (del Hoyo and Collar 2014) was previously placed in the genus Oceanites as O. maorianus (Oliver 1955) and genus Pealeornis as P. maoriana (Mathews 1932) by the New Zealand Checklist (2010).

Taxonomic source(s)
Brooke, M. de L. 2004. Albatrosses and Petrels Across the World. Oxford University Press, Oxford.
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
D	D	D1

Red List history

Year	Category	Criteria
2018	Critically Endangered	D
2016	Critically Endangered	D
2015	Critically Endangered	D
2013	Critically Endangered	D
2012	Critically Endangered	D
2010	Critically Endangered	D1
2009	Critically Endangered	D1
2008	Critically Endangered
2005	Critically Endangered
2004	Critically Endangered
2000	Extinct
1994	Extinct
1988	Extinct

Migratory status	unknown	Forest dependency	Does not normally occur in forest
Land mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	1,690,000	medium
Number of locations		-
Severely Fragmented		-

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	1-49	poor	estimated	2008
Population trend	Unknown		not applicable	-
Decline (3 years/1 generation past)		-	-	-
Decline (5 years/1 generation past)		-	-	-
Decline (10 years/1 generation past)		-	-	-
Decline (10 years/3 generation future)		-	-	-
Decline (10 years/3 generation past and future)		-	-	-
Number of subpopulations		-	-	-
Percentage in largest subpopulation		-	-	-
Generation length (yrs)	15.6	-	-	-

Population justification:

Seen at sea in small numbers, with ‘flocks’ of 10-20, 11 and 10-30 birds have been recorded during chumming sessions (Flood 2003, Gaskin and Baird 2005, Rayner et al. 2013). 

Trend justification: The population may be increasing, but the evidence is scarce and the current population trend remains largely unknown.

Country/Territory	Occurrence status	Presence	Resident	Breeding	Non-breeding	Passage
Australia	N	Extant
New Zealand	N	Extant	Yes

Country/Territory	IBA Name
New Zealand	North Eastern North Island (offshore)
New Zealand	Te Hauturu-o-Toi Little Barrier Island

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Temperate	major	breeding
Marine Neritic	Pelagic	major	non-breeding
Marine Neritic	Pelagic	major	breeding
Marine Oceanic	Epipelagic (0-200m)	major	breeding
Marine Oceanic	Epipelagic (0-200m)	major	non-breeding
Marine Oceanic	Mesopelagic (200-1000m)	major	breeding
Marine Oceanic	Mesopelagic (200-1000m)	major	non-breeding
Shrubland	Temperate	major	breeding
Altitude	0 - 750 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Felis catus	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Unknown		Unknown		Past Impact
		Stresses None
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Rattus exulans	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Unknown		Unknown		Past Impact
		Stresses None

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Recommended citation
BirdLife International (2023) Species factsheet: Fregetta maoriana. Downloaded from http://www.birdlife.org on 03/02/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 03/02/2023.