World Bird Checklist
Avian taxonomy and nomenclature used across North Thailand Birding follow the IOC World Bird List - latest version 14.1 (2024). Currently 11,093 species are listed. Changes and updates specifically affecting the Thai Bird List are listed here.
In conjunction with the IOC, North Thailand Birding maintains a world bird checklist matched and compared with the latest Clements checklist from Cornell Lab of Ornithology.
The complete checklist can be downloaded in Excel format: World Bird Checklist.