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|Species concept||HBW and BirdLife Taxonomic Checklist v5 (Dec 2020)||Clements, version 2021||Howard and Moore 4th edition (incl. corrigenda vol.1-2)||Handbook of the Birds of the World and Birdlife (Dec 2018)||IOC World Bird Names, version 11.2|
|Larus argentatus [incl. vegae]←||