Data Zone
The site was identified as internationally important for bird conservation in 2009 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 |
|---|---|---|---|---|
| Greater Crested Tern Thalasseus bergii | LC | breeding (1999–2006) | 25,000–29,000 nests | A4i |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2019) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2019 | good | high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | habitat | - | |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Marine Coastal/Supratidal | good (>90%) | good (>90%) | good |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Climate change and severe weather | likely in short term (<4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Human intrusions and disturbance | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Pollution | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Biological resource use | past (and unlikely to return) and no longer limiting | few individuals/small area (<10%) | 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%) | 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 | low |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | 100 |
| Land use | % of IBA |
|---|---|
| other | 100 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Seagull Island (Tiwi Islands) (Australia). Downloaded from
https://datazone.birdlife.org/site/factsheet/seagull-island-(tiwi-islands)-iba-australia on 23/12/2024.