This morning we were fortunate to see a pair of ground hornbills picking through a rhino midden for dung -beetle grubs. These turkey-sized birds  have a varied diet which often includes snakes, tortoises and young hares. Males are distinguished from females by a blue patch on the red gular-pouch situated on the throat (hence, gular). The striking white primary feathers of  the wings contrast with the black colouration of the rest of  the bird, especially when in flight.  These birds nest in large  holes in large trees and are a threatened species, with efforts being made to breed them in captivity and then to re-introduce them into the wild.