The avifauna of Nepal include a total of 900 species, of which two are endemic, one has been introduced by humans and 74 are rare or accidental. Thirty-two 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, 6th 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 Nepal.
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 Nepal
(E) Endemic - a species endemic to Nepal
(I) Introduced - a species introduced to Nepal as a consequence, direct or indirect, of human actions