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Résumé :
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The study of the winter requirements of migratory bird populations is necessary because the conditions they encounter in wintering areas largely determine their survival. The body condition of ducks in late winter is an important factor in the success of their breeding. This article reports on the diurnal behavior of two rare Anatidae in Algeria, Netta rufina and Oxyura leucocephala, in the wetland of Dayet El-Ferd, in northwestern Algeria (34°28”00’ N, 01°15”00’ W), classified as a Ramsar site. During the 2013/2014 winter, this site hosted the highest numbers of the Red-crested Pochard (510 individuals) and White-headed Duck (500 individuals) in Algeria. The diurnal behavior of these two species is dominated by feeding, which took up 41% of the time budget for the Red-crested Pochard and 38% for the White-headed Duck. This wetland therefore serves as a feeding ground for these two waterbirds.
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