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closeIUCN Red List history
| Year | Category |
|---|---|
| 2012 | Least Concern |
| 2010 | Least Concern |
Species attributes
| Migratory status | not a migrant | Forest dependency | Does not normally occur in forest |
| Land mass type | Average mass | - |
Distribution
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 102,000 | medium |
| Extent of Occurrence non-breeding (km2) | 128,000,000 | medium |
| Number of locations | - | |
| Fragmentation | - |
Population & trend
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 0 | |||
| Population trend | Decreasing | - | ||
| Number of subpopulations | - | - | - | |
| Largest subpopulation | - | - | - | |
| Generation length (yrs) | 16.3 | - | - | - |
| Population justification: The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. (1996). | ||||
| Trend justification: The population is suspected to be in decline owing to predation by invasive species and unsustainable levels of exploitation. | ||||
Country/Territory distribution
| Country/Territory | Occurrence status | Extinct | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|
| American Samoa | Native | No | |||
| Anguilla (to UK) | Native | No | |||
| Antigua and Barbuda | Native | No | |||
| Aruba (to Netherlands) | Native | No | |||
| Australia | Native | No | |||
| Bahamas | Native | No | |||
| Barbados | Native | No | |||
| Belize | Native | No | |||
| Bermuda (to UK) | Native | No | Yes | ||
| Bonaire, Sint Eustatius and Saba (to Netherlands) | Native | No | |||
| Brazil | Native | No | |||
| Cape Verde | Native | No | |||
| Cayman Islands (to UK) | Native | No | |||
| Chile | Native | No | |||
| Christmas Island (to Australia) | Native | No | |||
| Cocos (Keeling) Islands (to Australia) | Native | No | |||
| Colombia | Native | No | |||
| Comoros | Native | No | |||
| Cook Islands | Native | No | |||
| Costa Rica | Native | No | |||
| Cuba | Native | No | |||
| Curaçao (to Netherlands) | Native | No | |||
| Dominica | Native | No | |||
| Dominican Republic | Native | No | |||
| Ecuador | Native | No | |||
| Egypt | Native | No | |||
| Eritrea | Native | No | |||
| Fiji | Native | No | |||
| French Polynesia | Native | No | |||
| Grenada | Vagrant | No | Yes | ||
| Guadeloupe (to France) | Native | No | |||
| Guam (to USA) | Native | No | Yes | ||
| Guatemala | Native | No | |||
| Haiti | Native | No | |||
| Honduras | Unknown | No | |||
| India | Native | No | |||
| Indonesia | Native | No | |||
| Iran, Islamic Republic of | Native | No | Yes | ||
| Jamaica | Native | No | |||
| Japan | Native | No | |||
| Kenya | Native | No | |||
| Kiribati | Native | No | |||
| Malaysia | Native | No | |||
| Maldives | Vagrant | No | Yes | ||
| Marshall Islands | Native | No | |||
| Martinique (to France) | Native | No | |||
| Mauritius | Native | No | |||
| Mayotte (to France) | Native | No | |||
| Mexico | Native | No | |||
| Micronesia, Federated States of | Native | No | |||
| Montserrat (to UK) | Native | No | |||
| New Caledonia (to France) | Native | No | |||
| New Zealand | Native | No | |||
| Nicaragua | Native | No | |||
| Norfolk Island (to Australia) | Native | No | |||
| Northern Mariana Islands (to USA) | Native | No | |||
| Oman | Native | No | |||
| Pakistan | Native | No | |||
| Palau | Native | No | Yes | ||
| Panama | Native | No | |||
| Papua New Guinea | Native | No | |||
| Peru | Native | No | |||
| Philippines | Native | No | |||
| Pitcairn Islands (to UK) | Native | No | |||
| Puerto Rico (to USA) | Native | No | |||
| Réunion (to France) | Native | No | |||
| Samoa | Native | No | |||
| São Tomé e Príncipe | Native | No | |||
| Seychelles | Native | No | |||
| Sint Maarten (to Netherlands) | Native | No | |||
| Solomon Islands | Native | No | |||
| Somalia | Native | No | |||
| Spain | Vagrant | No | Yes | ||
| Sri Lanka | Native | No | |||
| St Helena (to UK) | Native | No | |||
| St Kitts and Nevis | Native | No | |||
| St Lucia | Native | No | |||
| St Martin (to France) | Native | No | |||
| St Vincent and the Grenadines | Native | No | |||
| Tanzania | Native | No | |||
| Thailand | Native | No | |||
| Tonga | Native | No | |||
| Trinidad and Tobago | Native | No | |||
| Turks and Caicos Islands (to UK) | Native | No | |||
| Tuvalu | Native | No | |||
| United Arab Emirates | Vagrant | No | Yes | ||
| United States Minor Outlying Islands (to USA) | Native | No | |||
| USA | Native | No | |||
| Venezuela | Native | No | |||
| Vietnam | Native | No | |||
| Virgin Islands (to UK) | Native | No | |||
| Virgin Islands (to USA) | Native | No | |||
| Wallis and Futuna Islands (to France) | Native | No | |||
| Yemen | Native | No |
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory | IBA Name | IBA link |
|---|---|---|
| Anguilla (to UK) | Dog Island |  |
| Antigua and Barbuda | Redonda | |
| Australia | Raine Island, Moulter and Maclennan Cays | |
| Bahamas | Booby Rocks and Pirates Bay | |
| Brazil | Atol das Rocas | |
| Chile | Isla Rapa Nui | |
| Chile | Isla Sala y Gómez | |
| Chile | Islas Desventuradas | |
| French Polynesia | Clipperton | |
| Indonesia | Pulau Manuk | |
| Jamaica | Pedro Cays and Bank | |
| New Caledonia (to France) | Îles des récifs Bampton et Chesterfield | |
| Oman | Halaaniyaat Islands | |
| Seychelles | Boudeuse island | |
| Seychelles | Cosmoledo atoll | |
| St Helena (to UK) | Boatswainbird Island | |
| Tanzania | Latham Island | |
| Trinidad and Tobago | St Giles Islands | |
| USA | Northwestern Hawaiian Islands | |
| Venezuela | Isla La Blanquilla | |
| Venezuela | Isla La Blanquilla - Marine | |
| Virgin Islands (to UK) | Anegada: Western salt ponds and coastal areas | |
| Virgin Islands (to USA) | North-west Cays | |
| Yemen | Sabuniya and Ka'l Fir'awn | |
Habitats & altitude
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Intertidal | Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc | major | resident |
| Marine Intertidal | Shingle and/or Pebble Shoreline and/or Beaches | major | resident |
| Marine Neritic | Macroalgal/Kelp | major | resident |
| Marine Neritic | Pelagic | major | resident |
| Marine Neritic | Seagrass (Submerged) | major | resident |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | resident |
| Marine Neritic | Subtidal Rock and Rocky Reefs | major | resident |
| Marine Neritic | Subtidal Sandy | major | resident |
| Marine Neritic | Subtidal Sandy-Mud | major | resident |
| Marine Oceanic | Epipelagic (0-200m) | major | resident |
| Altitude | 0 - 0 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2013) Species factsheet: Sula dactylatra. Downloaded from
http://www.birdlife.org on 24/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 24/05/2013.
This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
| Key facts | |
|---|---|
| Current IUCN Red List category | Least Concern |
| Family | Sulidae (Gannets and boobies) |
| Species name author | Lesson, 1831 |
| Population size | mature individuals |
| Population trend | Decreasing |
| Distribution size (breeding/resident) | 102,000 km2 |
| Country endemic? | No |
| Links to further information | |
| - Summary information on this species | |
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