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Résumé :
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The egg collection of Naturalis Biodiversity Center at Leiden, the Netherlands - founded in 1820 - contains no less then 118 635 eggs from 37 758 clutches from c 128 countries. Some of these clutches are from the rarest Dutch breeding species. In this paper, we describe these clutches, based on a database finalized in 2012. Notable are the clutches from Pallas's Sandgrouse Syrrhaptes paradoxus (1888; two), Great Bustard Otis tarda (1948), Gull-billed Tern Gelochelidon nilotica (1945, 1949 and 1951) and Aquatic Warbler Acrocephalus paludicola (1904, 1923, 1924, 1929, 1933, 1935, 1941 and 1945)
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