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Sterna bergii
– 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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CHARADRIIFORMES
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Family:
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LARIDAE
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Scientific Name:
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Sterna bergii
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Species Authority:
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Lichtenstein, 1823
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Common Name/s:
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GREAT CRESTED-TERN (Eng)
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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 extent of occurrence of 1,000,000–10,000,000 km². The global population size has not been quantified, but the species is not believed to approach the thresholds for the population size criterion of the IUCN Red List (i.e., less than 10,000 mature individuals in conjunction with appropriate decline rates and subpopulation qualifiers). Global population trends have not been quantified, 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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| 1988 | - | Lower Risk/least concern (BirdLife International 2004) |
| 1994 | - | Lower Risk/least concern (BirdLife International 2004) |
| 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 Extent of Occurrence of 1,000,000-10,000,000 km². The global population size has not been quantified, but the species is not believed to approach the thresholds for the population size criterion of the IUCN Red List (i.e. less than 10,000 mature individuals in conjunction with appropriate decline rates and subpopulation qualifiers). Global population trends have not been quantified, 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:
Australia; Bangladesh; British Indian Ocean Territory; Brunei Darussalam; Cambodia; China; Comoros; Djibouti; Egypt; Eritrea; French Polynesia; India; Indonesia; Iran, Islamic Republic of; Iraq; Israel; Japan; Kenya; Kiribati; Kuwait; Madagascar; Malaysia; Maldives; Mauritius; Mayotte; Mozambique; Myanmar; Namibia; New Caledonia; Oman; Pakistan; Papua New Guinea; Philippines; Saudi Arabia; Seychelles; Singapore; Solomon Islands; Somalia; South Africa; Sri Lanka; Sudan; Taiwan, Province of China; Tanzania, United Republic of; Thailand; United Arab Emirates; Vanuatu; Viet Nam; Wallis and Futuna; Yemen
Vagrant:
Jordan; Korea, Democratic People's Republic of; New Zealand
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Habitat and Ecology
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System:
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Terrestrial; Marine
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