The site was identified as important in 2012 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.Populations meeting IBA criteria ('trigger species'):
|Species||Current IUCN Red List Category||Season||Year(s)||Population estimate at site||IBA criteria met|
|Red-tailed Tropicbird Phaethon rubricauda||LC||breeding||2002||261 individuals||A4ii|
|Red-footed Booby Sula sula||LC||breeding||2002||25,000 individuals||A4ii|
|Bristle-thighed Curlew Numenius tahitiensis||NT||non-breeding||2012||200 individuals||A1, A4i|
|Sooty Tern Onychoprion fuscatus||LC||breeding||2002||876,000 individuals||A4i|
|A4iii Species group - seabirds||n/a||breeding||2002||26,489||A4iii|
|A4iii Species group - waterbirds||n/a||breeding||1973-2007||883,570 individuals||A4iii|
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2012).
|Protected area (PA)||PA designation||PA area (ha)||Relationship of PA with IBA||Overlap of PA with IBA (ha)|
|Palmyra Atoll||National Wildlife Refuge||205,173||protected area contains site||385|
|Pacific Remote Islands||Marine National Monument||127,786,000||protected area contains site||0|
BirdLife International (2023) Important Bird Area factsheet: Palmyra Atoll. Downloaded from http://datazone.birdlife.org/site/factsheet/palmyra-atoll-iba-united-states-minor-outlying-islands-(to-usa) on 21/09/2023.