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The site was identified as important in 2001 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-tailed Tropicbird Phaethon rubricauda	LC	breeding	-	1,900 breeding pairs	A4ii
White-tailed Tropicbird Phaethon lepturus	LC	breeding	-	2,500 breeding pairs	A4ii
Comoro Blue-pigeon Alectroenas sganzini	NT	resident	1999	present	A2
Malagasy Pond Heron Ardeola idae	EN	breeding	-	20-50 breeding pairs	A1, A4i
Western Reef-egret Egretta gularis	LC	breeding	-	1,000-3,000 breeding pairs	A4i
Lesser Frigatebird Fregata ariel	LC	breeding	-	6,000 breeding pairs	A4ii
Great Frigatebird Fregata minor	LC	breeding	-	4,000 breeding pairs	A4ii
Red-footed Booby Sula sula	LC	breeding	-	6,000-7,000 breeding pairs	A4ii
Ruddy Turnstone Arenaria interpres	NT	winter	-	500-1,000 individuals	A4i
Crab-plover Dromas ardeola	LC	non-breeding	-	2,800 individuals	A4i
Black-naped Tern Sterna sumatrana	LC	breeding	-	70-150 breeding pairs	A4i
Aldabra Drongo Dicrurus aldabranus	NT	resident	1999	present	A1, A2
Aldabra Brush-warbler Nesillas aldabrana	EX	resident	1983	present	A1, A2
Aldabra Fody Foudia aldabrana	EN	resident	1999	present	A2
A4iii Species group - seabirds	n/a	breeding	-	50,000-99,999 individuals	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2001) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2001. The most recent assessment (2001) is shown below.

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 area/population (10-49%)	slow but significant deterioration	medium
Biological resource use	happening now	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
Whole area of site (>90%) covered by appropriate conservation designation	No management plan exists but the management planning process has begun	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium

Year	Protected Area	Designation	% overlap with IBA
1981	Aldabra	Special Reserve	36
1982	Aldabra Atoll	World Heritage Site (natural or mixed)	36
2010	Aldabra Atoll	Ramsar Site, Wetland of International Importance	-

Land use	% of IBA
nature conservation and research	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Aldabra Special Reserve (Seychelles). Downloaded from https://datazone.birdlife.org/site/factsheet/aldabra-special-reserve-iba-seychelles on 23/11/2024.