|Location||Burkina Faso, Oudalan|
|Central coordinates||0o 5.00' West 14o 42.00' North|
|IBA criteria||A3, A4i, A4iii|
|Altitude||250 - 300m|
|Year of IBA assessment||2001|
Site description This site consists of seven seasonal lakes, the largest of which are Oursi and Darkoye, in the Réserve Partielle du Sahel, north of the town of Gorom-Gorom. The westernmost, Tin Edia, is located at the foot of hills, Oursi, the largest, is at the base of old sand-dunes, while the others, Darkoye, Kouyéra, Yomboli, Kissi and Bangao, occur in open steppe, to the west of the town of Markoye. Also included is the habitat between the lakes which includes sand-dunes (such as at Oursi), semi-desert grasslands, open eroded shields, drainage lines, inselbergs rising out of the plains and a series of hills. Depending entirely upon the annual run-off from the rains of July to September, lake levels vary considerably from year to year. Some lakes are ringed by important stands of trees such as Acacia albida and Ficus sp. On the seasonal flood-plains there is a rich plant community, including Aeschynomene lotus and the sedges and grasses Cyperus alopecuroides, Echinochloa stagnina, E. pyramidalis and Oryza longistaminata, providing important dry season grazing.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Little Grebe Tachybaptus ruficollis||winter||-||500 individuals||medium||A4i||Least Concern|
|Purple Swamphen Porphyrio porphyrio||winter||-||647 individuals||-||A4i||Least Concern|
|Himantopus himantopus||winter||-||1,713 individuals||-||A4i||Not Recognised|
|African Collared-dove Streptopelia roseogrisea||resident||1998||present||-||A3||Least Concern|
|Cricket Longtail Spiloptila clamans||resident||1998||present||-||A3||Least Concern|
|Chestnut-bellied Starling Lamprotornis pulcher||resident||1998||present||-||A3||Least Concern|
|Black Scrub-robin Cercotrichas podobe||resident||1998||present||-||A3||Least Concern|
|Sudan Golden Sparrow Passer luteus||resident||1998||present||-||A3||Least Concern|
|A4iii Species group - waterbirds||winter||-||20,000 individuals||unknown||A4iii|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|La Mare d'Oursi||Wetlands of International Importance (Ramsar)||45,000||is identical to site||45,000|
|Sahel||Partial Faunal Reserve||1,600,000||protected area contains site||45,000|
Local conservation groups The local conservation group below is working to support conservation at this IBA.
|Oursi Site Support Group||1998|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial - terrestrial||5%|
|Wetlands (inland)||Freshwater lakes and pools||minor|
|Land-use||Extent (% of site)|
|nature conservation and research||-|
|Notes: Firewood collection.|
|Notes: Information added by Georges Oueda based on experience May 2008|
Other biodiversity Mammals of global conservation concern include Gazella rufifrons (VU) and Acinonyx jubatus (VU) (continued occurrence requires verification).
Related state of the world's birds case studies
References MEE (1997), Weessie (1996).
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Recommended citation BirdLife International (2014) Important Bird Areas factsheet: Lake Oursi - Lake Darkoye. Downloaded from http://www.birdlife.org on 29/07/2014
To provide new information to update this factsheet or to correct any errors, please email BirdLife