Pied Avocet (Recurvirostra avosetta) Science Article 1
About 35% of the W. European population of the Avocet winters south of the Sahara. At least 4% of these birds utilize the Banc d’Arguin as a stopover site for some hours. It is proposed that the area functions as a ‘meeting point’ where Avocets merge into larger flocks at departure. The timing of migration suggests that most birds wintering in Africa originate from NW. Europe, as was also confirmed by the resighting of three colour-marked individuals.
Blomert A.M., Engelmoer M. & Ntiamoa B.Y, ARDEA 78 (12): 185-192.