Data Zone
The site was identified as internationally important for bird conservation in 2013 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 |
|---|---|---|---|---|
| Red-billed Tropicbird Phaethon aethereus | LC | breeding (2012) | 90 pairs | A4ii |
| Magnificent Frigatebird Fregata magnificens | LC | breeding (2012) | 418 pairs | B4ii |
| Brown Booby Sula leucogaster | LC | breeding (2012) | 1,231 pairs | A4ii |
| Masked Booby Sula dactylatra | LC | breeding (2012) | 31 pairs | B4ii |
| Brown Noddy Anous stolidus | LC | breeding (2007) | 191 pairs | B4i |
| Laughing Gull Larus atricilla | LC | resident (2007) | 365 pairs | A4i |
| Sooty Tern Onychoprion fuscatus | LC | breeding (2007) | 113,000 pairs | A4i |
| Bridled Tern Onychoprion anaethetus | LC | breeding (2007) | 46 pairs | B4i |
| A4iii Species group - waterbirds | n/a | breeding (2007) | min 115,200 pairs | A4iii |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2013. The most recent assessment (2015) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2015 | good | very high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Red-billed Tropicbird Phaethon aethereus | 75 / 75 (birds) | 100 | good | ||
| Magnificent Frigatebird Fregata magnificens | 96 / 96 (birds) | 100 | good | ||
| Brown Booby Sula leucogaster | 2,000 / 2,000 (birds) | 100 | good | ||
| Masked Booby Sula dactylatra | 12 / 12 (birds) | 100 | good | ||
| Brown Noddy Anous stolidus | 280 / 280 (birds) | 100 | good | ||
| Laughing Gull Larus atricilla | 150 / 150 (birds) | 100 | good | ||
| Sooty Tern Onychoprion fuscatus | 28,600 / 28,600 (birds) | 100 | good | ||
| Bridled Tern Onychoprion anaethetus | 120 / 120 (birds) | 100 | good | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Climate change and severe weather | happening now | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | high |
| Geological events | happening now | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | high |
| Agricultural expansion and intensification | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Human intrusions and disturbance | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Biological resource use | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Natural system modifications | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Residential and commercial development | likely in long term (>4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Pollution | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Transportation and service corridors | 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%) | No management planning has taken place | 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 Neritic | major (>10) | |
| Shrubland | major (>10) | Arid lowland scrub |
| Marine Coastal/Supratidal | minor (<10) | |
| Marine Intertidal | minor (<10) |
| Land use | % of IBA |
|---|---|
| fisheries/aquaculture | major (>10) |
| nature conservation and research | major (>10) |
| rangeland/pastureland | major (>10) |
| tourism/recreation | minor (<10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Dog Island (Anguilla (to UK)). Downloaded from
https://datazone.birdlife.org/site/factsheet/dog-island-iba-anguilla-(to-uk) on 23/12/2024.