Corvus corax diet composition in different agricultural lands in Algeria

Abstract

Study on Common Raven’s diet is conducted in two regions in Algeria, region of Djelfa in the middle part of Algerian Highlands and region of Laghouat occupying a large part of Northern Algerian Sahara. Analysis of Corvus corax’s regurgitation allowed us to count 2.726 individual-preys spread into 7 classes, 89 families, 26 orders and 232 preys-species. In term of F insects are the most ingested by Corvus corax. Rate of this class is of 81.1 % at level of El Guelta to reach 95.6 % in station of Sidi Mekhlouf. In term of biomass, Meriones shawii is the species the most profitable in weight in station of Sidi Mekhlouf (44.4 %), of Rocher des Pigeons (Pigeons Rock) (35.6 %) and even in station of El Guelta (14.3 %). However, in station of Dayet Zoujten, the highest biomass is presented by Gallus domesticus (42.1). This same observation is noted for species Gallus sp. (B % = 42.0 %) at level of El Mesrane.