New Delhi, June 12 -- AviList, the first-ever unified global checklist of bird species, became live on June 12, 2025, after four years of work by the Working Group on Avian Checklists.

The new checklist will replace the International Ornithological Committee (IOC) and Clements lists and will be updated annually, according to a statement by BirdLife International, the global partnership of non-governmental organisations that strives to conserve birds and their habitats.

The Working Group on Avian Checklists included representatives from BirdLife International, the Cornell Lab of Ornithology, the American Ornithologists Society, the International Ornithologists' Union, and Avibase.

The list contains 11,131 species, 19,879 subspecies, 2,...