AVOCETTA - VOLUME 5 - N. 2
SPOSTAMENTI DEL GABBIANO COMUNE LARUS RIDIBUNDUS SVERNANTE LUNGO LAMBRO E POQuadrelli G.
Abstract:THE BLAC.K HEADED GULL WINTERING ALONG PO RIVER The Hlack Headed Gull Larus ridibundus is mainly a winter resident along the Po river, as shown by the relative abundance index in the table (mean no. Gulls seen per standard trip) .. From nocturnal roosts, on the Po river banks, flocks of hundreds of Gulls disperse in the morning to feed in the coutryside and in irrigation canals. In the study area, the Gulls follow during this dispersal the river Lambro