author(s)
Hana Saker, Meriem Rouaiguia, Soumaya Talai-Harbi, Mouslim Bara, Zihad Bouslama, Moussa Houhamdi

abstract
This study investigated the diurnal behavior pattern of the Eurasian wigeon Anas penelope in Lac des Oiseaux (oriental Numidia, northeast of Algeria) during two wintering season (2012/13 and 2013/14). The maximum number of this duck was recorded early Januaryboth in 2012/13 and 2013/14 respectively. The dominant activity in the diurnal time budget of this bird was the feeding noted 37% and 40% respectively. Overall, there was not marked seasonal change in the diurnal time budget of this species. The species used Lac des Oiseaux both as feeding and roosting area. Several factors could influencing the geographical variation in the diurnal behavior of wigeon at Lac des Oiseaux.