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

Taxonomic source(s)
Brooke, M. de L. 2004. Albatrosses and Petrels Across the World. Oxford University Press, Oxford.
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2018	Least Concern
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

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	140,000,000 km2
Extent of Occurrence (non-breeding)	71,600,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	poor	estimated	2009
Population trend	stable	-	suspected	-
Generation length	13 years	-	-	-

Population justification: Brooke (2004) estimated the global population to number at least 7,000,000 individuals.

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Antarctica	extant	native			yes
Argentina	extant	native	yes		yes
Australia	extant	native			yes
Brazil	extant	native			yes
Chile	extant	native	yes	yes
Falkland Islands (Malvinas)	extant	native	yes	yes
French Southern Territories	extant	native		yes
Heard Island and McDonald Islands (to Australia)	extant	uncertain
Kenya	extant	vagrant
Mauritius	extant	vagrant
New Zealand	extant	native			yes
Norfolk Island (to Australia)	extant	uncertain
Peru	extant	native			yes
South Africa	extant	native			yes
South Georgia & the South Sandwich Islands	extant	native			yes
St Helena (to UK)	extant	vagrant
Uruguay	extant	native			yes

Country/Territory	IBA Name
Falkland Islands (Malvinas)	New Island Group

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Grassland	Subantarctic	suitable	breeding
Marine Intertidal	Rocky Shoreline	suitable	breeding
Marine Neritic	Macroalgal/Kelp	major	non-breeding
Marine Neritic	Macroalgal/Kelp	major	breeding
Marine Neritic	Pelagic	major	non-breeding
Marine Neritic	Pelagic	major	breeding
Marine Neritic	Seagrass (Submerged)	major	non-breeding
Marine Neritic	Seagrass (Submerged)	major	breeding
Marine Neritic	Subtidal Loose Rock/pebble/gravel	major	non-breeding
Marine Neritic	Subtidal Loose Rock/pebble/gravel	major	breeding
Marine Neritic	Subtidal Rock and Rocky Reefs	major	non-breeding
Marine Neritic	Subtidal Rock and Rocky Reefs	major	breeding
Marine Neritic	Subtidal Sandy	major	non-breeding
Marine Neritic	Subtidal Sandy	major	breeding
Marine Neritic	Subtidal Sandy-Mud	major	non-breeding
Marine Neritic	Subtidal Sandy-Mud	major	breeding
Marine Oceanic	Epipelagic (0-200m)	major	non-breeding
Marine Oceanic	Epipelagic (0-200m)	major	breeding
Marine Oceanic	Mesopelagic (200-1000m)	major	non-breeding
Marine Oceanic	Mesopelagic (200-1000m)	major	breeding
Altitude	0 - 300 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
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Reduced reproductive success, Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Slender-billed Prion Pachyptila belcheri. Downloaded from https://datazone.birdlife.org/species/factsheet/slender-billed-prion-pachyptila-belcheri on 19/12/2024.
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 19/12/2024.