PW005
Rock Islands


IBA Justification

The site was identified as internationally important for bird conservation in 2008 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:
Species Red List Season (year/s of estimate) Size IBA criteria
Micronesian Scrubfowl Megapodius laperouse NT resident (2005) present A1, A2
Palau Ground Dove Pampusana canifrons EN resident (2005) present A2
Micronesian Imperial-pigeon Ducula oceanica VU resident (2005) present A2
Palau Fruit-dove Ptilinopus pelewensis LC resident (2005) present A2
Palau Swiftlet Aerodramus pelewensis LC resident (2005) present A2
Palau Kingfisher Todiramphus pelewensis NT resident (2005) present A2
Micronesian Myzomela Myzomela rubratra LC resident (2005) present A2
Morningbird Pachycephala tenebrosa LC resident (2005) present A2
Palau Fantail Rhipidura lepida LC resident (2005) present A2
Palau Flycatcher Myiagra erythrops LC resident (2005) present A2
Palau Bush-warbler Horornis annae LC resident (2005) present A2
Giant White-eye Megazosterops palauensis NT resident (2005) present A2
Dusky White-eye Zosterops finschii LC resident (2005) present A2
Citrine White-eye Zosterops semperi LC resident (2005) present A2
Micronesian Starling Aplonis opaca LC resident (2005) present A2

IBA Conservation

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2008. The most recent assessment (2018) is shown below.

IBA conservation assessment
Year of assessment State Pressure Response
2018 good high high
Whole site assessed? State assessed by Accuracy of information
yes habitat good

State (condition of the trigger species' habitats)
Habitat Quantity (% remaining) Quality (% carrying capacity) Result
Forest - good (>90%) good

Pressure (threats to the trigger species and/or their habitats)
Threat Timing Scope Severity Result
Biological resource use happe­ning now some of popul­ation/area (10–49%) moderate decline (10–30% over 3 gener­ations) high
Invasive and other problematic species and genes happe­ning now some of popul­ation/area (10–49%) slow decline (1–10% over 3 gener­ations) medium
Human intrusions and disturbance happe­ning now some of popul­ation/area (10–49%) no or slight decline (<1% over 3 gener­ations) low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation Planning Action Result
Whole area (>90%) covered by appropriate conservation designation A compre­hensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species Substantive conservation measures are being implemented, but these are not compre­hensive and are limited by resources and capacity high

IBA Protection

Year Protected Area Designation (management category) % coverage of IBA
1956 Ngerukewid Islands Wildlife Preserve (V) 1
1976 Ngerumekoal Spawning Area (V) 1
1999 Ngkisaol Sardines Sanctuary (V) <1
2012 Rock Islands Southern Lagoon World Heritage Site (natural or mixed) (UA) 100

Habitats

Habitat % of IBA Habitat detail
Forest major (>10) Lowland evergreen rain forest (tropical); Beach and atoll forest

Land use

Land use % of IBA
nature conservation and research major (>10)
tourism/recreation major (>10)


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Rock Islands (Palau). Downloaded from https://datazone.birdlife.org/site/factsheet/rock-islands-iba-palau on 23/12/2024.