Data Zone
The site was identified as important in 2007 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 List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Tongan Scrubfowl Megapodius pritchardii | VU | resident | 1991-1993 | 188-235 breeding pairs | A1, A2 |
| Tongan Fruit-dove Ptilinopus porphyraceus | LC | resident | 1991-1993 | present | A2 |
| Blue-crowned Lorikeet Vini australis | LC | resident | 1991-1993 | present | A2 |
| Polynesian Starling Aplonis tabuensis | LC | resident | 1991-1993 | present | A2 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2007) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2007 | not assessed | high | not assessed |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | unset | - | |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Biological resource use | happening now | majority/most of area/population (50-90%) | moderate to rapid deterioration | high |
| Invasive and other problematic species and genes | happening now | majority/most of area/population (50-90%) | slow but significant deterioration | high |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Protected areas | Management plan | Other action | Result |
| Not assessed | Not assessed | Not assessed | not assessed |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Marine Coastal/Supratidal | 35 | |
| Artificial/Terrestrial | Abandoned or fallow farmland, disturbed ground, Farmbush, fallow & ruderal land, Agricultural forest (coconut/breadfruit etc forest, Coconut plantations | 30 |
| Rocky areas (eg. inland cliffs, mountain peaks) | 25 | |
| Forest | Lowland evergreen rain forest (tropical) | 10 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Niuafo'ou (Tonga). Downloaded from
https://datazone.birdlife.org/site/factsheet/niuafoou-iba-tonga on 22/11/2024.