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The site was identified as internationally important for bird conservation 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 List	Season (year/s of estimate)	Size	IBA criteria
Little Grebe Tachybaptus ruficollis	LC	non-breeding (1998)	500 birds	A4i
African Collared-dove Streptopelia roseogrisea	LC	resident (1998)	present	A3
Purple Swamphen Porphyrio porphyrio	LC	non-breeding (1998)	647 birds	A4i
Black-winged Stilt Himantopus himantopus	LC	non-breeding (1998)	1,713 birds	A4i
Cricket Warbler Spiloptila clamans	LC	resident (1998)	present	A3
Chestnut-bellied Starling Lamprotornis pulcher	LC	resident (1998)	present	A3
Black Scrub-robin Cercotrichas podobe	LC	resident (1998)	present	A3
Sudan Golden Sparrow Passer luteus	LC	resident (1998)	present	A3
A4iii Species group - waterbirds	n/a	non-breeding (1998)	min 20,000 birds	A4iii

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.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Grassland	good (>90%)	poor (40–69%)	poor
Wetlands (inland)	good (>90%)	good (>90%)	good

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	most of popul­ation/area (50–90%)	slow decline (1–10% over 3 gener­ations)	high
Biological resource use	happe­ning now	most of popul­ation/area (50–90%)	slow decline (1–10% over 3 gener­ations)	high

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Most of area (50–90%) covered (including the most critical parts for important bird species)	No management plan exists, but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation (management category)	% coverage of IBA
1970	Sahel	Partial Faunal Reserve (IV)	100

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Oursi Site Support Group	1998

For more information on BirdLife's work with Local Conservation Groups, please visit Spotlight on local empowerment.

Habitat	% of IBA	Habitat detail
Grassland	94
Artificial/Terrestrial	5
Wetlands (inland)	minor (<10)	Freshwater lakes and pools

Land use	% of IBA
rangeland/pastureland	major (>10)
agriculture	-
fisheries/aquaculture	-
nature conservation and research	-
other	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Oursi - Lake Darkoye (Burkina Faso). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-oursi--lake-darkoye-iba-burkina-faso on 23/12/2024.