Herald Petrel Pterodroma heraldica


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.

IUCN Red list criteria met and history
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 Not Recognised
1988 Not Recognised
Species attributes

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 (km2) 91,000,000
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2004
Population trend Decreasing suspected -
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: Brooke (2004) estimated the global population to number around 150,000 individuals.

Trend justification: The population is suspected to be in decline owing to predation by invasive species.

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
American Samoa U Extant
Argentina N Extant
Australia N Extant Yes
Brazil N Extant Yes
Chile N Extant Yes
Cook Islands N Extant Yes
Fiji V Extant Yes
French Polynesia N Extant Yes
Kiribati U Extant
Marshall Islands U Extant
Mauritius N Extant Yes
Micronesia, Federated States of U Extant
Nauru U Extant
New Caledonia (to France) N Extant Yes
New Zealand U Extant
Niue (to New Zealand) U Extant
Norfolk Island (to Australia) U Extant
Papua New Guinea U Extant
Pitcairn Islands (to UK) N Extant Yes
Samoa U Extant
Solomon Islands U Extant
Tokelau (to New Zealand) U Extant
Tonga N Extant Yes
Tuvalu U Extant
United States Minor Outlying Islands (to USA) U Extant
USA U Extant
Vanuatu U Extant
Wallis and Futuna Islands (to France) U Extant

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Mauritius Round Island
French Polynesia Temoe
Pitcairn Islands (to UK) Ducie Island
Pitcairn Islands (to UK) Henderson Island
French Polynesia Pentes du mont Hiro de Raivavae
Chile Isla Rapa Nui
American Samoa National Park of American Samoa - Ta'u
French Polynesia Mangareva
French Polynesia Akamaru island
French Polynesia Mangareva
French Polynesia Taravai
French Polynesia Tenarunga
French Polynesia Vanavana
French Polynesia Hiva Oa
French Polynesia Tahuata
French Polynesia Ilots rocheux de Ua Pou
Cook Islands Rarotonga Cloud Forest
Cook Islands Takitumu Conservation Area, Rarotonga
New Caledonia (to France) Îles des récifs Bampton et Chesterfield
Tonga Fonualei
Tonga 'Ata Island
French Polynesia Marquesas Marin

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Neritic Macroalgal/Kelp suitable non-breeding
Marine Neritic Macroalgal/Kelp suitable breeding
Marine Neritic Pelagic major non-breeding
Marine Neritic Pelagic major breeding
Marine Neritic Seagrass (Submerged) suitable non-breeding
Marine Neritic Seagrass (Submerged) suitable breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel suitable non-breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel suitable breeding
Marine Neritic Subtidal Rock and Rocky Reefs suitable non-breeding
Marine Neritic Subtidal Rock and Rocky Reefs suitable breeding
Marine Neritic Subtidal Sandy suitable non-breeding
Marine Neritic Subtidal Sandy suitable breeding
Marine Neritic Subtidal Sandy-Mud suitable non-breeding
Marine Neritic Subtidal Sandy-Mud suitable 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
Rocky areas (eg. inland cliffs, mountain peaks) major breeding
Shrubland Subtropical/Tropical Moist major breeding
Altitude 0 - 1000 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Indirect ecosystem effects, Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Rattus exulans Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Reduced reproductive success

Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Pterodroma heraldica. Downloaded from on 01/07/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 01/07/2022.