Impala and red-billed Oxpeckers. Oxpeckers are a common sight on most large mammals in South Africa. They are the cleaning service for bugs and other parasites. Watercolor on 300lb watercolor paper. The relationship between impalas and red-billed oxpeckers (*Buphagus erythrorhynchus*) in South Africa is a fascinating example of mutualistic symbiosis, though with some nuance. Oxpeckers spend much of their time perched on the bodies of impalas, feeding on ticks, flies, and other ectoparasites embedded in the host's skin and fur — providing the impala with a form of pest control that helps reduce irritation and the risk of tick-borne diseases. In return, the oxpeckers gain a reliable and mobile food source. Beyond parasite removal, oxpeckers also serve as an early warning system for impalas: their sharp, hissing alarm calls and sudden flight alert the herd to approaching predators, giving the impala precious seconds to react. However, the relationship isn't entirely selfless on the oxpecker's part — research has shown that oxpeckers will sometimes keep wounds open on their hosts to feed on blood, tissue, and earwax, suggesting the dynamic leans slightly toward parasitism in certain contexts. Overall, though, the association is largely beneficial to both species and is one of the most iconic wildlife partnerships seen on the African savanna.