Quelques observations sur la présence du Goéland d'Audouin (Larus audouinii) pendant le période postnuptial au Delta de l'Ebre

Abstract

In this paper 24 observations of the Audouin’s Gull Larus audouinii in the Ebro delta are presented. These data demonstrate the present importance of this area during the post-nuptial period, probably due to the recent increase of the westerne europe breading popuiation. Must be emphasized the scarce number of juveniles obsewed, the hight and constant number of inmatures and subadults, and the increase in number of guils during august. Likewise is noticed the hight sociability betwen the Audouin’s and Herring’s Gulls in this area.