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The site was identified as internationally important for bird conservation in 2019 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
Pink-backed Pelican Pelecanus rufescens	LC	non-breeding (2017)	961 birds	A4, B3a
Bar-tailed Godwit Limosa lapponica	NT	winter (2017)	335 birds	B1a
Red Knot Calidris canutus	NT	winter (2017)	96 birds	B1a
Curlew Sandpiper Calidris ferruginea	VU	winter (2017)	96 birds	B1a
Common Gull-billed Tern Gelochelidon nilotica	LC	winter (2017)	335 birds	B3a

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2019. The most recent assessment (2001) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	few indivi­duals/small area (<10%)	slow decline (1–10% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation (management category)	% coverage of IBA
1996	Bolama - Bijagós	UNESCO-MAB Biosphere Reserve (UA)	100

Habitat	% of IBA	Habitat detail
Forest	100

Land use	% of IBA
agriculture	-
nature conservation and research	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ilha de Bolama - Rio Grande de Buba (Guinea-Bissau). Downloaded from https://datazone.birdlife.org/site/factsheet/ilha-de-bolama--rio-grande-de-buba-iba-guinea-bissau on 23/12/2024.