This image taken at Giants Castle in the Drakensberg of KZ-Natal, of a Raven, " Wing Surfing ", on the wing of a Cape Vulture. The Ravens give the Vultures a torrid time scrapping over any food that may be around ! This vulture was quite unsuspecting of the doings of the Raven as it approached from behind, landing on the wing, and then as the Vulture dipped down it flew off.