Bioécologie De Quelques Rapaces Dans Les Régions De Ghardaïa Et De Béchar
Résumé: The present work concerns the study of the bioecology of the few birds of prey and their impacts on species harmful to agriculture in two Saharan regions namely the regions of Ghardaïa and Béchar and the study concerns the food availability, the station 2 seems more diversified than station 1, in terms of bird species and rodents. The study of the diet allowed us that the raptors diurnal (Buteo rufinus and Falco biarmicus) are often based on a prey noted by meals (pelota) whereas the nocturnal species (Bubo ascalaphus and Asio flammus) are characterized rather by two prey / meal. The study of the interaction of diets of different species of raptors shows that there are similarities represented mainly by the most abundant prey in the field, rodents and species of birds such as Columba livia, Streptopelia sp. . and Passer sp. to be harmful, are basic prey for most species of raptors, where they play a very important role in the control of their populations, even the harvest seems weak, but constant and continuous throughout the life of this predator.
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