Frederique Olivier / Kirk's dik-dik (Madoqua kirkii) grazing in a thicket, Serengeti NP, Tanzania.

Frederique Olivier / Female Defassa waterbuck (Kobus ellipsiprymnus defassa) looking around, Serengeti NP, Tanzania.

Frederique Olivier / Two male White-bellied bustards (Eupodotis senegalensis) walking in long grass, Serengeti NP, Tanzania.

Frederique Olivier / Cheetah (Acinonyx jubatus) walking, Serengeti NP, Tanzania.

Frederique Olivier / Mixed herd of Burchell's Zebra (Equus burchellii) and Blue wildebeest (Connochaetes taurinus) migrating, Serengeti NP, Tanzania.

Frederique Olivier / Blue wildebeest (Connochaetes taurinus) moving in thin woodland, Serengeti NP, Tanzania.

Frederique Olivier / Blue wildebeest (Connochaetes taurinus) moving in thin woodland, Serengeti NP, Tanzania.

Frederique Olivier / Blue wildebeest (Connochaetes taurinus) moving in thin woodland, Serengeti NP, Tanzania.

Frederique Olivier / Blue wildebeest (Connochaetes taurinus) grazing, Serengeti NP, Tanzania.

Frederique Olivier / Panning shot of Blue wildebeest (Connochaetes taurinus) moving in thin woodland, Serengeti NP, Tanzania.

Frederique Olivier / Panning shot of a Nile crocodile (Crocodylus niloticus) basking on the shore and opening its eyes, Serengeti NP, Tanzania.

Frederique Olivier / Male Impala (Aepyceros melampus) grazing and scratching its head on a branch, Serengeti NP, Tanzania.