DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Impala (Aepyceros melampus) with a red-billed oxpecker (Buphagus erythrorhynchus) on its head. The oxpecker and impala have a symbiotic relationship. The bird gains food by eating ticks from the impala's skin, while the impala is cleaned of parasites. However, oxpeckers have been known to feed from open wounds on mammals as well, preventing them from healing. Impala are antelopes that are found in the grasslands and savannahs of southern Africa. They feed mainly on grasses and woody plants. Photographed in Luangwa National Park, Zambia, Africa.
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