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 IBA criteria.
Populations meeting IBA criteria ('key species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Red-tailed Tropicbird Phaethon rubricauda | LC | breeding (2006) | 500 breeding pairs | A4ii |
| Lesser Frigatebird Fregata ariel | LC | breeding (2006) | 4,000 breeding pairs | A4ii |
| Masked Booby Sula dactylatra | LC | breeding (2006) | 500 breeding pairs | A4ii |
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 status | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2012 | very unfavourable | high | high |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | medium | |
| State (condition of the key species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Red-tailed Tropicbird Phaethon rubricauda | 1,500 / 1,000 (individuals) | 100 | favourable | ||
| Lesser Frigatebird Fregata ariel | 12,000 / 15,000 (individuals) | 80 | near favourable | ||
| Masked Booby Sula dactylatra | 1,500 / 2,000 (breeding pairs) | 75 | near favourable | ||
| Grey-backed Tern Onychoprion lunatus | 1,500 / 10,000 (individuals) | 15 | very unfavourable | ||
| A4iii Species group - waterbirds | 400,000 / 400,000 (individuals) | 100 | not assessed | ||
| Pressure (threats to the key species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | whole population/area (>90%) | slow deterioration (1–10% over 3 generations) | high |
| Climate change and severe weather | likely in long term (beyond 4 years) | whole population/area (>90%) | slow deterioration (1–10% over 3 generations) | medium |
| Residential and commercial development | happening now | some of population/area (10–49%) | no deterioration (<1% over 3 generations) | low |
| Biological resource use | likely in short term (within 4 years) | whole population/area (>90%) | no deterioration (<1% over 3 generations) | low |
| Response (conservation actions taken for the key species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area of site (>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 |
| 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 (2025) Important Bird Area factsheet: Enderbury Island (Kiribati). Downloaded from
https://datazone.birdlife.org/site/factsheet/enderbury-island-iba-kiribati on 09/01/2025.