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 |
|---|---|---|---|---|
| Great Frigatebird Fregata minor | LC | breeding (1988) | 2,427 pairs | A4ii |
| Red-footed Booby Sula sula | LC | breeding (1988) | 2,221 pairs | A4ii |
| Bristle-thighed Curlew Numenius tahitiensis | NT | non-breeding (1988–1990) | 83–300 birds | A1, A4i |
| Black Noddy Anous minutus | LC | breeding (1988) | 8,392 pairs | A4i |
| Gygis alba | NR | breeding (1988) | 3,957 pairs | A4i |
| Sooty Tern Onychoprion fuscatus | LC | breeding (1988–1990) | 188,200 pairs | A4i |
| A4iii Species group - waterbirds | n/a | breeding (1988) | 202,040 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 | not assessed | high | very low |
| 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 | ||
| Red-tailed Tropicbird Phaethon rubricauda | 112 / 112 (pairs) | 100 | not assessed | ||
| Great Frigatebird Fregata minor | 4,854 / 5,000 (pairs) | 98 | not assessed | ||
| Red-footed Booby Sula sula | 4,442 / 2,500 (pairs) | 100 | not assessed | ||
| Bristle-thighed Curlew Numenius tahitiensis | 192 / 192 (birds) | 100 | not assessed | ||
| Black Noddy Anous minutus | 16,794 / 16,794 (pairs) | 100 | not assessed | ||
| Gygis alba | 11,482 / 11,482 (pairs) | 100 | not assessed | ||
| A4iii Species group - waterbirds | 407,495 / 407,495 (birds) | 100 | not assessed | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Climate change and severe weather | likely in long term (>4 years) | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | high |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | no or slight decline (<1% over 3 generations) | low |
| Biological resource use | happening now | some of population/area (10–49%) | no or slight decline (<1% over 3 generations) | low |
| Residential and commercial development | 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 |
| Little/none of area covered (<10%) | No management planning has taken place | Very little or no conservation action taking place | very low |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Millenium (Caroline) Island (Kiribati). Downloaded from
https://datazone.birdlife.org/site/factsheet/millenium-(caroline)-island-iba-kiribati on 23/12/2024.