This is a list of the bird species recorded in the archipelago of Puerto Rico which consists of the main island of Puerto Rico, two island municipalities off the east coast (Vieques and Culebra), three uninhabited islands off the west coast (Mona, Monito, and Desecheo) and more than 125 smaller cays and islands. The avifauna of Puerto Rico includes a total of 349 species, of which 166 (47.56%) are accidental, 42 (12.03%) are introduced by humans and 16 (4.58%) are endemic. Around 120 of these species breed in Puerto Rico while the majority of the others overwinter in the archipelago. This list does not include extinct species.