LC
Red-footed Booby Sula sula



Taxonomy

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

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 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass 1016 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 185,000,000 medium
Extent of Occurrence non-breeding (km2) 121,000,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
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 - - -
Largest subpopulations - - -
Generation length (yrs) 13 - - -

Population justification: The global population is estimated to number >1,000,000 individuals (del Hoyo et al. 1992). National population sizes have been estimated at <100 breeding pairs and <50 individuals on migration in Taiwan and <100 breeding pairs and <50 individuals on migration in Japan (Brazil 2009).

Trend justification: The population is suspected to be in decline owing to habitat loss, predation by invasive species and unsustainable levels of exploitation.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
American Samoa U Extant
Anguilla (to UK) N Extant
Antigua and Barbuda N Extant
Aruba (to Netherlands) N Extant
Australia N Extant
Bahamas N Extant
Bangladesh N Extant
Barbados N Extant
Belize N Extant
Bonaire, Sint Eustatius and Saba (to Netherlands) N Extant
Brazil N Extant
British Indian Ocean Territory N Extant Yes
Cayman Islands (to UK) N Extant Yes
China (mainland) N Extant
Christmas Island (to Australia) N Extant Yes
Cocos (Keeling) Islands (to Australia) N Extant Yes
Colombia N Extant
Comoros N Extant
Cook Islands N Extant
Costa Rica N Extant
Cuba N Extant
Curaçao (to Netherlands) N Extant
Djibouti N Extant
Dominica N Extant
Dominican Republic N Extant
Ecuador N Extant
El Salvador N Extant Yes
Fiji N Extant Yes
French Guiana N Extant
French Polynesia N Extant
French Southern Territories U Extant
Grenada N Extant
Guadeloupe (to France) V Extant Yes
Guam (to USA) N Extant Yes
Guatemala N Extant
Guyana U Extant
Haiti N Extant
Honduras N Extant
Hong Kong (China) V Extant
India N Extant
Indonesia N Extant
Jamaica N Extant Yes
Japan N Extant
Kenya V Extant
Kiribati N Extant
Madagascar N Extant
Malaysia N Extant
Maldives V Extant
Marshall Islands N Extant Yes
Martinique (to France) N Extant
Mauritius V Extinct Yes
Mayotte (to France) N Extant
Mexico N Extant
Micronesia, Federated States of N Extant Yes
Montserrat (to UK) N Extant
Mozambique U Extant
Nauru V Extant
New Caledonia (to France) N Extant
Nicaragua U Extant
Niue (to New Zealand) N Extant
Norfolk Island (to Australia) U Extant
Northern Mariana Islands (to USA) N Extant Yes
Oman V Extant Yes
Palau N Extant Yes
Panama V Extant
Papua New Guinea N Extant
Philippines N Extant
Pitcairn Islands (to UK) N Extant
Portugal V Extant
Puerto Rico (to USA) N Extant Yes
Réunion (to France) N Extant Yes
Russia N Extant Yes
Russia (Asian) V Extant
Samoa N Extant
Seychelles N Extant Yes
Sint Maarten (to Netherlands) V Extant Yes
Solomon Islands N Extant Yes
Somalia U Extant
Sri Lanka N Extant
St Helena (to UK) N Extant Yes
St Kitts and Nevis N Extant
St Lucia N Extant
St Martin (to France) V Extant Yes
St Vincent and the Grenadines N Extant
Suriname U Extant
Taiwan, China U Extant
Tanzania V Extant
Thailand V Extant
Timor-Leste N Extant Yes
Tokelau (to New Zealand) U Extant
Tonga N Extant
Trinidad and Tobago N Extant
Turks and Caicos Islands (to UK) N Extant
Tuvalu N Extant
United Arab Emirates V Extant Yes
United States Minor Outlying Islands (to USA) N Extant Yes
USA N Extant Yes
Vanuatu U Extant
Venezuela N Extant
Vietnam N Extant
Virgin Islands (to UK) N Extant Yes
Virgin Islands (to USA) N Extant Yes
Wallis and Futuna Islands (to France) N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Antigua and Barbuda Redonda
Australia Coringa-Herald Reefs
Belize Belize Off-shore and Barrier Islands
British Indian Ocean Territory Barton Point Nature Reserve, Diego Garcia
British Indian Ocean Territory Danger Island, Chagos Bank
Cayman Islands (to UK) Booby Pond Nature Reserve
Christmas Island (to Australia) Christmas Island
Cocos (Keeling) Islands (to Australia) North Keeling Island
Fiji Kibobo Islet
Fiji Namenalala
Fiji Namenelala Marine
Fiji Northern Lau Marine
Fiji Nukubasaga & Nukupureti
Fiji Qelelevu Islands
Fiji Ringgold Islands
Fiji Ringgold Islands Marine
French Polynesia Tetiaroa
French Polynesia Tetiaroa, Moorea et Tahiti Marine
French Southern Territories Europa
Indonesia Pulau Manuk
Kiribati Kiritimati (Christmas Island) Marine
Kiribati Malden Island
Kiribati Malden Island Marine
Kiribati Millenium (Caroline) Island
Kiribati Millenium (Caroline) Island Marine
Kiribati Vostok Island
Marshall Islands Bokak Atoll
Marshall Islands Bokak Atoll Marine
Mexico Islas Revillagigedo
New Caledonia (to France) Îles des récifs Bampton et Chesterfield
New Caledonia (to France) Récifs Bampton et Chesterfield Marin
New Caledonia (to France) Récifs d'Entrecasteaux
New Caledonia (to France) Récifs d'Entrecasteaux Marin
Palau Fana Island
Palau Fana Island Marine
Puerto Rico (to USA) Mona and Monito
Seychelles Aldabra Special Reserve
Seychelles Cosmoledo
St Vincent and the Grenadines Battowia Island
Tonga 'Ata Island
Tonga Ata Island Marine
Trinidad and Tobago Little Tobago Island
Trinidad and Tobago St Giles Islands
United States Minor Outlying Islands (to USA) Navassa
United States Minor Outlying Islands (to USA) Palmyra Atoll
United States Minor Outlying Islands (to USA) Palmyra Atoll Marine
USA Kilauea Point National Wildlife Refuge
USA Northwestern Hawaiian Islands
Wallis and Futuna Islands (to France) Alofi
Wallis and Futuna Islands (to France) Futuna Marine

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
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 - 100 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Reduced reproductive success, Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion, Reduced reproductive success

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2019) Species factsheet: Sula sula. Downloaded from http://www.birdlife.org on 10/12/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 10/12/2019.