Johnston Atoll

IBA Criteria

Year of most recent IBA criteria assessment: 2012

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
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

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap 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 (2022) Important Bird Areas factsheet: Johnston Atoll. Downloaded from on 11/08/2022.