The following is a list of the bird species recorded in Rivers State, Nigeria.The avifauna of Rivers State include a total of 442 species. 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, 2022 edition. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. * (A) Accidental - a species that rarely or accidentally occurs in Rivers State