New Zealand Scaup (Aythya novaeseelandiae) | Details

New Zealand Scaup Aythya novaeseelandiae

Current view: Data table and detailed info

Taxonomy

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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
Turbott, E. G. 1990. Checklist of the birds of New Zealand. Ornithological Society of New Zealand, Wellington.
Turbott, E.G. 1990. Checklist of the birds of New Zealand. Ornithological Society of New Zealand, Wellington.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
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

Species attributes

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	618,000 km²
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	3300-6700 mature individuals	poor	estimated	2009
Population trend	increasing	-	suspected	-
Generation length	7.7 years	-	-	-

Population justification: The population is estimated to number 5,000-10,000 individuals, roughly equating to 3,300-6,700 mature individuals.

Trend justification: The overall trend is suspected to be increasing (Wetlands International 2006).

Country/territory distribution

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

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Aquatic & Marine	Artificial/Aquatic - Water Storage Areas (over 8ha)	suitable	resident
Marine Coastal/Supratidal	Coastal Freshwater Lakes	suitable	resident
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	suitable	resident
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	major	resident
Altitude	0 - 1000 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: New Zealand Scaup Aythya novaeseelandiae. Downloaded from https://datazone.birdlife.org/species/factsheet/new-zealand-scaup-aythya-novaeseelandiae on 18/12/2024.
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 18/12/2024.