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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Red-billed Tropicbird Phaethon aethereus	LC	breeding	2012	90 breeding pairs	A4ii
Magnificent Frigatebird Fregata magnificens	LC	breeding	2012	418 breeding pairs	B4ii
Brown Booby Sula leucogaster	LC	breeding	2012	1,231 breeding pairs	A4ii
Masked Booby Sula dactylatra	LC	breeding	2012	31 breeding pairs	B4ii
Brown Noddy Anous stolidus	LC	breeding	2007	191 breeding pairs	B4i
Laughing Gull Larus atricilla	LC	resident	2007	365 breeding pairs	A4i
Sooty Tern Onychoprion fuscatus	LC	breeding	2007	113,000 breeding pairs	A4i
Bridled Tern Onychoprion anaethetus	LC	breeding	2007	46 breeding pairs	B4i
A4iii Species group - waterbirds	n/a	breeding	2007	min 115,200 breeding pairs	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2013) may differ.

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.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Red-billed Tropicbird Phaethon aethereus	75	75	individuals	100	favourable
Magnificent Frigatebird Fregata magnificens	96	96	individuals	100	favourable
Brown Booby Sula leucogaster	2,000	2,000	individuals	100	favourable
Masked Booby Sula dactylatra	12	12	individuals	100	favourable
Brown Noddy Anous stolidus	280	280	individuals	100	favourable
Laughing Gull Larus atricilla	150	150	individuals	100	favourable
Sooty Tern Onychoprion fuscatus	28,600	28,600	individuals	100	favourable
Bridled Tern Onychoprion anaethetus	120	120	individuals	100	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Climate change and severe weather	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Agricultural expansion and intensification	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Geological events	happening now	whole area/population (>90%)	slow but significant deterioration	high
Human intrusions and disturbance	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Residential and commercial development	likely in long term (beyond 4 years)	some of area/population (10-49%)	moderate to rapid deterioration	medium
Biological resource use	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Invasive and other problematic species and genes	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Transportation and service corridors	past (and unlikely to return) and no longer limiting	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Little/none of site 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

Habitat1	Habitat detail	% of IBA
Marine Neritic		major (>10)
Shrubland	Arid lowland scrub	major (>10)
Marine Coastal/Supratidal		minor (<10)
Marine Intertidal		minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
fisheries/aquaculture	major (>10)
nature conservation and research	major (>10)
rangeland/pastureland	major (>10)
tourism/recreation	minor (<10)

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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 23/11/2024.