Guguan Island

IBA Justification

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 at site IBA criteria triggered
Micronesian Scrubfowl Megapodius laperouse NT resident - present A1, A2
White-throated Ground-dove Pampusana xanthonura NT resident - present A1, A2
Sooty Tern Onychoprion fuscatus LC non-breeding 1979-1988 37,655 individuals A4i
Grey-backed Tern Onychoprion lunatus LC breeding 1979-1988 1,200 breeding pairs A4i
Micronesian Myzomela Myzomela rubratra LC resident - present A2
Micronesian Starling Aplonis opaca LC resident - present A2
A4iii Species group - waterbirds n/a unknown 1979-1988 40,273 individuals A4iii

Note: The current IUCN Red List category may differ from the category that was valid at the time of IBA criteria assessment.

For more information about the IBA criteria, please click here

IBA Conservation

IBA conservation status - summary
Year of assessment (most recent) Threat (pressure) Condition (state) Action (response)
2007 high not assessed not assessed
Was the whole site assessed? no Condition (state) assessed by unset
Accuracy of information -

Threats to the site (pressure)
Threat level 1 Threat level 2 Timing Scope Severity Result
Geological events volcanic eruptions likely in long term (beyond 4 years) whole area/population (>90%) very rapid to severe deterioration high
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species happening now some of area/population (10-49%) slow but significant deterioration medium

Conservation actions taken at the site (response)
Protected-area designation Management planning Other conservation action Result
Not assessed Not assessed Not assessed not assessed
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Guguan Island Preserve 424 protected area overlaps with site 0
Guguan Island Preserve 412 is identical to site 412

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Guguan Island. Downloaded from on 08/06/2023.