Red oxpeckers on the back of a giraffe. The red oxpecker (Buphagus erythrorhynchus) is a passerine bird that feeds on ticks, larvae and parasites found on other animals such as giraffes, buffalos, antelopes, ... They also prefer blood and therefore they peck at the mammal's wounds to keep them open.
, Stefan Cruysberghs, Nikon D600 + Sigma 50-500mm, Request high resolution photo