Data Zone
The site was identified as internationally important for bird conservation in 2010 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 |
|---|---|---|---|---|
| Brown Pelican Pelecanus occidentalis | LC | resident (-) | present | A4i |
| Wilson's Plover Charadrius wilsonia | LC | breeding (-) | present | A4i |
| Piping Plover Charadrius melodus | NT | winter (-) | present | A1 |
| Black Skimmer Rynchops niger | LC | resident (-) | present | A4i |
| Sandwich Tern Thalasseus sandvicensis | LC | breeding (-) | present | A4i |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2014) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2014 | not assessed | very high | medium |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | unknown | |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Natural system modifications | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Climate change and severe weather | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Energy production and mining | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Some of area covered (10–49%) | A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species | The conservation measures needed for the site are being comprehensively and effectively implemented | medium |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1992 | Isles Dernieres Barrier Islands | Refuge (V) | 2 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Isles Dernieres - Timbalier Islands (USA). Downloaded from
https://datazone.birdlife.org/site/factsheet/isles-dernieres--timbalier-islands-iba-usa on 25/12/2024.