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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	138,000,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	poor	estimated	2004
Population trend	decreasing	-	suspected	-
Generation length	11.7 years	-	-	-

Population justification: Brooke (2004) estimated the global population to exceed 15,000,000 individuals.

Trend justification: The population is suspected to be declining owing to predation from invasive species.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Angola	extant	uncertain
Antarctica	extant	vagrant			yes
Argentina	extant	native	yes
Australia	extant	native	yes
Falkland Islands (Malvinas)	extant	native	yes
Madagascar	extant	vagrant			yes
Mozambique	extant	native	yes
Namibia	extant	uncertain
New Zealand	extant	native		yes
Peru	extant	native	yes
South Africa	extant	native	yes
South Georgia & the South Sandwich Islands	extant	native	yes
St Helena (to UK)	extant	native		yes

Country/Territory	IBA Name
New Zealand	Chatham (offshore)
New Zealand	Chatham Islands (nearshore)
New Zealand	Rangatira South East Island
St Helena (to UK)	Gough Island
St Helena (to UK)	Inaccessible Island
St Helena (to UK)	Nightingale Island group
St Helena (to UK)	Tristan Island

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Grassland	Subantarctic	major	breeding
Marine Coastal/Supratidal	Sea Cliffs and Rocky Offshore Islands	major	breeding
Marine Intertidal	Rocky Shoreline	major	breeding
Marine Neritic	Macroalgal/Kelp	suitable	resident
Marine Neritic	Pelagic	major	resident
Marine Neritic	Seagrass (Submerged)	suitable	resident
Marine Neritic	Subtidal Loose Rock/pebble/gravel	suitable	resident
Marine Neritic	Subtidal Rock and Rocky Reefs	suitable	resident
Marine Neritic	Subtidal Sandy	suitable	resident
Marine Neritic	Subtidal Sandy-Mud	suitable	resident
Marine Oceanic	Epipelagic (0-200m)	major	resident
Marine Oceanic	Mesopelagic (200-1000m)	major	resident
Rocky areas (eg. inland cliffs, mountain peaks)		suitable	breeding
Altitude	0 - 300 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Climate change & severe weather	Storms & flooding	Timing		Scope		Severity		Impact
		Past, Likely to Return		Minority (<50%)		Rapid Declines		Past Impact
		Stresses Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Felis catus	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Rapid Declines		Medium Impact: 6
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Gallirallus australis	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Mus musculus	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Very Rapid Declines		Medium Impact: 7
		Stresses Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Mustela erminea	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Rapid Declines		Medium Impact: 6
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Unspecified species	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Reduced reproductive success

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Recommended citation
BirdLife International (2024) Species factsheet: Broad-billed Prion Pachyptila vittata. Downloaded from https://datazone.birdlife.org/species/factsheet/broad-billed-prion-pachyptila-vittata 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.