Data Zone
The site was identified as internationally important for bird conservation in 2012 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 |
|---|---|---|---|---|
| Lesser Frigatebird Fregata ariel | LC | breeding (2006) | 600 pairs | A4ii |
| Sooty Tern Onychoprion fuscatus | LC | breeding (2006) | 600,000 pairs | A4i |
| A4iii Species group - waterbirds | n/a | breeding (2006) | 602,310 pairs | A4iii |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2012. The most recent assessment (2012) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2012 | poor | high | medium |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | population | medium | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Lesser Frigatebird Fregata ariel | 600 / 600 (pairs) | 100 | not assessed | ||
| Sooty Tern Onychoprion fuscatus | 1,800,000 / 3,000,000 (birds) | 60 | poor | ||
| A4iii Species group - waterbirds | 1,806,930 / 1,806,930 (birds) | 100 | not assessed | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | high |
| Climate change and severe weather | likely in long term (>4 years) | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | medium |
| Biological resource use | happening now | most of population/area (50–90%) | 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 | Some limited conservation initiatives are in place | medium |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 2010 | Phoenix Islands Protected Area | World Heritage Site (natural or mixed) (UA) | 100 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Orona Atoll (Hull Island) (Kiribati). Downloaded from
https://datazone.birdlife.org/site/factsheet/orona-atoll-(hull-island)-iba-kiribati on 27/12/2024.