The park is particularly rich in vultures and raptors. One striking example is the bearded vulture, which is an enormous bird with a wingspan over 2 meters, commonly seen soaring high along the cliffs. The bearded vulture waits patiently for scavengers to finish picking off meat, and then descends to retrieve whole bones. These vultures can then be seen diving towards the cliffs, bone in beak, at speeds up to 130 km/hr. Just before reaching the cliffs, the vulture will release the bone, causing it to strike the rock at a very fast speed and shatter. The vultures then swallow the bone shards whole - this is the only animal that feeds almost exclusively on bone, with bone comprising 70-90% of the diet.