The East African "P. boisei", on the other hand, seems to have been largely herbivorous and fed on C4 plants. Its powerful jaws allowed it to consume a wide variety of different plants, though it may have largely preferred nutrient-rich bulbotubers as these are known to thrive in the well-watered woodlands it is thought to have inhabited. Feeding on these, "P. boisei" may have been able to meet its daily caloric requirements of approximately 9700 kJ after about 6 hours of foraging.