List of birds of Nauru

There are 34 species of birds that have been recorded living in the wild in Nauru, one of which is endemic to the island and two of which have been introduced by humans. One species, the zebra finch, is now locally extinct on Nauru. Out of the 25 species of birds that have been confirmed to occur natively on Nauru, 18 are non-breeding visitors. Only two land birds, the Micronesian imperial-pigeon and the endemic Nauru reed warbler, breed on Nauru.^[1] Three species occurring on Nauru are listed as being near-threatened on the IUCN Red List and two are listed as being vulnerable.^{[2][3][4][5][6]}

Nauru is a small atoll in the Pacific Ocean with an equatorial climate. The island's environment has been described as one of the world's most modified due to surface mining for phosphate, bombing during World War II, and rapid urbanisation.^[7] It was covered with tropical rainforest before the 19th century,^[8] but its current vegetation consists of strand, shrubland, scattered coconut trees, and various ornamental and fruit trees. Habitat destruction has most likely caused a decline in the numbers of some species, such as the Micronesian imperial-pigeon and the black noddy.^[7]

This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of the 2022 edition of The Clements Checklist of Birds of the World. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account.

The following codes have been used to denote categories. Species without these tags are commonly occurring native species.

• (A) Accidental – A species that rarely or accidentally occurs in Nauru.
• (E) Endemic – A species endemic to Nauru.
• (I) Introduced – A species introduced to Nauru as a direct or indirect consequence of human actions.
• (Ex) Extirpated – A species that no longer occurs in Nauru although populations exist elsewhere.