La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Autumn movements of Italian Sparrows Passer italiae in central Italy
Auteurs :	Marco Gustin, Auteur ; Alberto Sorace, Auteur
Type de document :	Article
Dans :	Ringing & Migration (21(1) May, 2002)
Article en page(s) :	1-4
Résumé :	In October 1998, we studied movements of Italian Sparrows Passer italiae on the Italian Adriatic coast, through ringing and observations of the movements of flocks. Both the absence of recaptures of the 247 Italian Sparrows that were captured and the mean increase in fat during the study period suggest that these Sparrows were moving through the study area. Two factors suggest that the observed movements constituted an invasion rather than a regular migration. First, the peak of captures was in the early afternoon and not early in the morning, and second, all flocks were observed flying northward and not southward which is the typical direction of most Paleartic birds during post-breeding migration. An analysis of data from the Italian Ringing Scheme showed that movements of Italian Sparrows ringed on the Adriatic coast were the longest compared to other areas of origin. Movements of Italian Sparrows are likely to be more common and extended than previously thought and may promote the genetic flow both between conspecific populations and between other Sparrow species (Italian, Spanish and House Sparrows) in Italy.

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