Johnston Atoll

IBA Justification

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 1973-2007 6,500 individuals A4ii
Brown Noddy Anous stolidus LC breeding 1973-2007 17,000 individuals A4i
Sooty Tern Onychoprion fuscatus LC breeding 1973-2007 360,000 individuals A4i
A4iii Species group - waterbirds n/a breeding 1973-2007 380,004 individuals A4iii

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2012).

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Pacific Remote Islands Marine National Monument 127,786,000 protected area contains site 0
Johnston Island National Wildlife Refuge 220,278 protected area contains site 286
Johnston Atoll National Wildlife Refuge 229,373 protected area overlaps with site 0

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Johnston Atoll. Downloaded from on 26/02/2024.