Depending on the taxonomic viewpoint, there are 10,858 (Clements V2023) or 11,032 (IOC ver.
14.1) living bird species recognised.
As of January 9th 2025 according to the iGoTerra website, there are 18 birders who have added 9,000 or more species of birds to their life lists.
An additional 15 birders have added at least 8,000 species of life birds.
Note: all known sources of bird species life list data are self-reported.