Cape Buffalo (Syncerus caffer caffer), bull with both a Yellow-billed Oxpecker (Buphagus africanus) on the left and a Red-billed Oxpecker (Buphagus erythrorhynchus), Chobe National Park, Botswana, Africa

"Southern Giraffe (Giraffa camelopardalis giraffa), bull collects twigs and leaves with his extensible tongue, at his horn a Yellow-billed Oxpecker (Buphagus africanus), Kruger National Park, South Africa, Africa"

Cape Buffalo (Syncerus caffer caffer), bull with both a Yellow-billed Oxpecker (Buphagus africanus) on the left and a Red-billed Oxpecker (Buphagus erythrorhynchus), Chobe National Park, Botswana, Africa

White Rhinoceros or Square-lipped Rhinoceros (Ceratotherium simum), standing in dry grass, covered in flies, with two Red-billed Oxpeckers (Buphagus erythrorhynchus) on its back, Kruger National Park, South Africa, Africa

White Rhinoceros or Square-lipped Rhinoceros (Ceratotherium simum), lying down, covered in flies, with two Red-billed Oxpeckers (Buphagus erythrorhynchus) on it, Kruger National Park, South Africa, Africa

African buffalo (Syncerus caffer), bull feeding on leaves, Red-billed oxpecker (Buphagus erythrorhynchus) on buffalo's face, Kruger National Park, South Africa, Africa

Three red-billed oxpeckers (Buphagus erythrorhynchus), perched on the back of a greater kudu (tragelaphus strepsiceros), Kruger National Park, South Africa, Africa

Kaffernbuffel (Syncerus caffer) mit Rotschnabel-Madenhacker (Buphagus erythrorhynchus) auf Schnauze, Portrait, Kruger Nationalpark, Sudafrika

"Impala (Aepyceros melampus), male, with Red-billed Oxpecker (Buphagus erythrorhynchus) at its head, Kruger National Park, South Africa, Africa"