List of birds of Guam

This is a list of the bird species recorded in Guam. The avifauna of Guam includes a total of 146 species as of August 2021, according to Bird Checklists of the World. Of them, eight have been introduced by humans and 32 are rare or accidental. 3 species are endemic, of which one is extinct and two are extinct in the wild though their reintroductions are either in progress or planned. Five species have been extirpated.

This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (English and scientific names) are those of The Clements Checklist of Birds of the World, 2022 edition.

The following tags have been used to highlight several categories of occurrence.

  • (A) Accidental – a species that rarely or accidentally occurs in Guam
  • (End) Endemic – a species entirely confined to Guam in its natural distribution
  • (E) Extinct – a recent bird that no longer exists
  • (EW) Extinct in the wild – a species which only exists in captive breeding programs
  • (I) Introduced – a species introduced to Guam as a consequence, direct or indirect, of human actions
  • (Ex) Extirpated – a species that no longer occurs in Guam although populations exist elsewhere


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