Wim van den Heever / Leopard (Panthera pardus) male walking on a rock. Photographed with a spot light. Greater Kruger National Park, South Africa, July.

Neil Aldridge / Martial eagle (Polemaetus bellicosus) flying, Kruger National Park, South Africa.

Neil Aldridge / Goliath heron (Ardea goliath) standing in the waters, Lake Panic, Kruger National Park, South Africa.

Neil Aldridge / Southern yellow-billed hornbill (Tockus leucomelas) displays while calling in winter, Kruger National Park, South Africa.

Richard Du Toit / Greater kudu (Tregalaphus strepsiceros) covered in Yellowbilled oxpeckers (Buphagus africanus) rear view, Kruger National Park, South Africa.

Richard Du Toit / Red-billed Oxpecker (Buphagus erythrorhynchus) group on Warthog (Phacochoerus africanus), Kruger National Park, South Africa

Richard Du Toit / White Rhinoceros (Ceratotherium simum) covered with mud, Kruger National Park, South Africa

Richard Du Toit / Red-billed Oxpecker (Buphagus erythrorhynchus) group on White Rhinoceros (Ceratotherium simum), Kruger National Park, South Africa

Richard Du Toit / Red-billed Oxpecker (Buphagus erythrorhynchus) group on White Rhinoceros (Ceratotherium simum), Kruger National Park, South Africa

Richard Du Toit / African Elephant (Loxodonta africana) bulls drinking, Shingwedzi River, Kruger National Park, South Africa

Richard Du Toit / Impala (Aepyceros melampus) male with Red-billed Oxpecker (Buphagus erythrorhynchus) pair, Kruger National Park, South Africa

Richard Du Toit / African Lion (Panthera leo) male in thick bush, Kruger National Park, South Africa