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This is a list of the bird species recorded in Tonga. The avifauna of Tonga include a total of 73 species, of which two are endemic, five have been introduced by humans and eight are rare or accidental. Seven species are globally threatened. This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of ''The Clements Checklist of Birds of the World'', 5th edition. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. Introduced and accidental species are included in the total counts for Tonga. The following tags have been used to highlight several categories. The commonly occurring native species do not fall into any of these categories. * (A) Accidental - a species that rarely or accidentally occurs in Tonga * (E) Endemic - a species endemic to Tonga * (I) Introduced - a species introduced to Tonga as a consequence, direct or indirect, of human actions __NOTOC__ ==Albatrosses== Order: ProcellariiformesFamily: Diomedeidae The albatrosses are among the largest of flying birds, and the great albatrosses from the genus ''Diomedea'' have the largest wingspans of any extant birds. There are 21 species worldwide and 1 species which occurs in Tonga. *Wandering albatross, ''Diomedea exulans'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of birds of Tonga」の詳細全文を読む スポンサード リンク
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