Search Foraging Strategies of Migratory Raptors Under Different Environmental Conditions

Several studies have shown in different organisms how their movements can be fitted to patterns optimize search of food resources. According abundance and availability resources, strategies will optimal, such as Lévy Brownian random search. We analyze the movement four species migratory raptors with degrees ecological specialization diet during breeding wintering periods evaluate differences according season: Egyptian Vulture, Short-toed Snake Eagle, Booted Red Kite. From GPS locations, we obtained a set segments lengths that were analyzed verify fitting functions strategies. Vulture’s trajectories both period, whereas period most pattern. In case fit was greater strategy throughout year, while Eagles Kites exhibited combination patterns. These could accounted for feeding environmental context over annual cycle. specialized (i.e., Eagle) pattern would maximize encounters scarce unpredictable broad trophic niche Eagle Kite), adapted exploit resources abundance. Scavengers like Vulture shift also between distribution carrion. Therefore, analysis used an indirect indicator track changes across range conditions. This is particularly important under current global change which largely expected affect spend vital cycle distant areas.