Migrazione e svernamento di allodola Alauda arvensis e pispola Anthus pratensis in un ambiente prativo nell’Oltrepò Pavese

Abstract

The intensity of autumn migration of skylark reached its peak in the first half of October (73.8 ind./10 ha), while in winter the species was more abundant in the first half of December (31.3 ind./10 ha). Spring migration was of moderate intensity (14.8 ind./10 ha). Migratory movements of meadow pipit were intense only at the end of November-beginning of December (48.6 ind./10 ha), with low density in winter and during spring migration (7.9 ind./10 ha). At the beginning of winter, flocks of skylarks used more areas closer to the margins with tree, while isolated birds totally avoided this situation. Compared with skylark, meadow pipit used areas with greater coverage of soil and grass higher.