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Sula dactylatra
– Least Concern
Taxonomy
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Kingdom:
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ANIMALIA
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Phylum:
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CHORDATA
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Class:
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AVES
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Order:
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PELECANIFORMES
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Family:
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SULIDAE
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Scientific Name:
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Sula dactylatra
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Species Authority:
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Lesson, 1831
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Common Name/s:
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Taxonomic Notes:
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Sula dactylatra (Sibley and Monroe 1990, 1993) has been split into S. dactylatra and S. granti following AOU (2000).
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Assessment Information
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Red List Category & Criteria:
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LC ver 3.1 (2001)
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Year Assessed:
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2004
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Assessor/s:
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BirdLife International
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Evaluator/s:
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Ekstrom, J. & Butchart, S. (BirdLife International Red List Authority)
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Justification:
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This species has a large range, with an estimated global breeding extent of occurrence of 50,000–100,000 km². It has a large global population estimated to be 200,000 individuals (M. Crosby in litt. 2003). Global population trends have not been quantified; there is evidence of a population decline (del Hoyo et al. 1992), but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
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History:
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| 2000 | - | Lower Risk/least concern (BirdLife International 2000) |
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Geographic Range
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Range Description:
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This species has a large range, with an estimated global breeding Extent of Occurrence of 50,000-100,000 km². It has a large global population estimated to be 200,000 individuals (M. Crosby in litt. 2003). Global population trends have not been quantified; there is evidence of a population decline (del Hoyo et al. 1992), but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
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Countries:
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Native:
Anguilla; Antigua and Barbuda; Aruba; Australia; Bahamas; Barbados; Belize; Brazil; Cayman Islands; Chile; Christmas Island; Cocos (Keeling) Islands; Colombia; Comoros; Cook Islands; Costa Rica; Cuba; Dominica; Dominican Republic; Ecuador; Egypt; Eritrea; Fiji; French Polynesia; Greenland; Guadeloupe; Guatemala; Haiti; India; Indonesia; Iran, Islamic Republic of; Jamaica; Japan; Kenya; Kiribati; Malaysia; Marshall Islands; Martinique; Mauritius; Mayotte; Mexico; Montserrat; Netherlands Antilles; New Caledonia; New Zealand; Nicaragua; Norfolk Island; Northern Mariana Islands; Oman; Pakistan; Panama; Peru; Philippines; Pitcairn; Puerto Rico; Réunion; Saint Helena; Saint Kitts and Nevis; Saint Lucia; Saint Pierre and Miquelon; Saint Vincent and the Grenadines; Samoa; Sao Tomé and Principe; Seychelles; Solomon Islands; Somalia; Sri Lanka; Tanzania, United Republic of; Thailand; Trinidad and Tobago; Turks and Caicos Islands; United States; Venezuela; Viet Nam; Virgin Islands, British; Virgin Islands, U.S.; Yemen
Vagrant:
Grenada; Maldives; Spain; United Arab Emirates
Regionally extinct:
Cape Verde
Uncertain presence and origin:
Honduras
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Habitat and Ecology
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System:
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Terrestrial; Marine
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List of Habitats:
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| 10.1 | Marine Oceanic - Epipelagic (0-200m) |
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Bibliography
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Bibliography:
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Bird Reference Citations. The numbers inserted in the text accounts above (usually in bold) refer to references. For further details on these references, click on the BirdLife International link above to go to the specific species account on the BirdLife web site. In some cases, particularly in the taxonomic notes, the references are cited using the author names. Details for these can be found on the BirdLife International web site at the following two places:
For References from A–L.
For References from M–Z. BirdLife International. 2000. Threatened Birds of the World. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, U.K. BirdLife International. 2004 Threatened Birds of the World 2004. CD-ROM. BirdLife International, Cambridge, U.K.
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