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Résumé :
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The present revision provides new data for 159 species. Since the publication in October 2010 of the book on the birds of Mauritania (Isenmann et al. 2010), 16 new species have been recorded or confirmed (Zino’s Petrel, Cape Verde Shearwater, Swinhoe’s Storm Petrel, Red-footed Booby, Cinereous Vulture, South Polar Skua, Damara Tern, Greyish Eagle Owl, Long-billed Pipit, Olive-backed Pipit, Yellow-browed Warbler, Moltoni’s Warbler, African Golden Oriole, Purple Starling, Lesser blue-eared Starling, Little Bunting). Five out of the ten terrestrial species are of afrotropical origin. The occurrence of 11 further species has not been retained. In general, the terrestrial records have dramatically decreased in the last years (partly for security reasons in that part of Africa). Marked or tagged birds have provided a lot of new valuable data. They confirm that the country plays a major role in the migration system of many palearctic species wintering in tropical Africa (but a recent study shows a large and widespread decline of European winter visitors and of local birds due to an increased grazing pressure of livestock and a reduced woody cover, Zwarts et al. 2018). The records of seabirds have increased thanks to direct observations and marked bird studies.
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