Figure 1.
Model predictions for the probability of a vulture reaching a carcass on any given day (3 hours foraging), as a function of vulture and carcass numbers in a fixed area of 2500 km2. Undiscovered carcasses can be detected at a maximum distance of 300 m, those with vultures already feeding on them at 4 km. Vultures descending towards a discovered carcass can be detected at a range of either (a) 4 or (b) 10 km. Carcasses: diamonds, 50; filled squares, 20; open squares, 10; filled circles, 3; and open circles, 1.