Klein & Hubert / Nile crocodile (Crocodylus niloticus) close up of jaw and teeth, Chobe River, Botswana, Africa.

Suzi Eszterhas / Leopard (Panthera pardus) mother and cub age four months , Jao Reserve, Okavango, Botswana

Ann & Steve Toon / African elephants (Loxodonta africana) herd silhouetted at sunset. Chobe National Park, Botswana.

Tony Heald / African wild dog (Lycaon pictus) portrait. Chobe National Park Botswana. Digitally enhanced sepia image.

Neil Aldridge / A young White rhinoceros (Ceratotherium simum) leaves a secure enclosure known as a boma in the Okavango Delta, northern Botswana, after being translocated from South Africa as part of efforts to rebu...

Neil Aldridge / Black rhinoceros (Diceros bicornis) stands in evening light on Chief's Island in Okavango Delta, Botswana,. This rhino was released in the Okavango Delta as part of efforts to rebuild the rhino popula...

Neil Aldridge / White rhinoceros (Ceratotherium simum) mother and calf, prepare to leave a boma - a secure enclosure - in the Okavango Delta in northern Botswana after being translocated from South Africa as part of...

Neil Aldridge / Blindfolded and tranquilised adult White rhinoceros (Ceratotherium simum) with a tracking tag lies and recovers in the Okavango Delta, northern Botswana, following a translocation operation that invol...

Neil Aldridge / Team of vets and conservation staff move a sedated White rhinoceros (Ceratotherium simum) into a comfortable resting position in a secure enclosure known as a boma during a translocation operation to...

Klein & Hubert / Meerkat (Suricata suricatta) three one-month old pups playing on the burrow under a watchful adult 'babysitter', Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) baby, age one month, looking up to 'babysitting' adult, Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) 'babysitter' with three pups about one month old on the burrow, Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) two 'babysitters' with three pups, age one month, playing on burrow, Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) two pups, age one month, playing on burrow, Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) alpha female nursing her one month old pups on the den, Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) baby, age one month, on den with adult 'babysitter', Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) three pups, age one month, on den with adult 'babysitter', Kalahari Desert, Botswana.

Klein & Hubert / Meerkat (Suricata suricatta) alarmed group standing on hind legs watching jackal pass by, Kalahari, Botswana

Klein & Hubert / Meerkat (Suricata suricatta) standing on burrow at sunset, Kalahari, Botswana

Klein & Hubert / Meerkat (Suricata suricatta) baby, age one month, sitting on burrow, Kalahari, Botswana.

Guy Edwardes / African elephant (Loxodonta africana) with Egret (Ardeidae sp) on back wtih tourists watching from boat in background. Chobe River, Botswana. 2017.

Guy Edwardes / African fish eagle (Haliaeetus vocifer), Savuti, Botswana.

Guy Edwardes / Hippopotamus (Hippopotamus amphibius) in Chobe River, Botswana.

Guy Edwardes / Red-billed oxpecker (Buphagus erythrorhynchus) feeding on Impala (Aepyceros melampus), Savuti, Botswana.

Guy Edwardes / Little bee-eater (Merops pusillus) vocalising whilst perched on branch, Khwai, Botswana.

Guy Edwardes / Reed cormorant (Microcarbo africanus) perched on termite mound, Khwai, Botswana.

Guy Edwardes / Saddle-billed stork (Ephippiorhynchus senegalensis), Moremi Game Reserve, Botswana.

Guy Edwardes / Allen's / Lesser gallinule (Porphyrio alleni) walking on waterlilies, Chobe River, Botswana.

Guy Edwardes / Black crake (Amaurornis flavirostra) standing on lily pads, Chobe River, Botswana.

Michel Roggo / View of African fish eagle (Haliaeetus vocifer),from underwater, trying to catch a fish on the surface, Okavango Delta, Botswana, June. Photographed for The Freshwater Project

Michel Roggo / Aquatic plants on the river bed of the Okavango river, Okavango Delta, Botswana, June 2014 . Photographed for The Freshwater Project

Klein & Hubert / African elephant (Loxodonta africana) bull 'bluff charging' Botswana.

Klein & Hubert / African elephant (Loxodonta africana) calf following mother, Botswana.

Klein & Hubert / African elephant (Loxodonta africana) dust bathing, Botswana.

Klein & Hubert / African elephant (Loxodonta africana) calf portrait, Botswana.

Tony Heald / African elephant (Loxodonta africana) feeding on grasses, Chobe River, Chobe National Park, Botswana. May.

Ann & Steve Toon / Sable (Hippotragus niger), Chobe National Park, Botswana, June

Christophe Courteau / African elephants (Loxodonta africana) swimming across Chobe River, trunks raised above surface for breathing, Chobe National Park, border between Botswana and Namibia.

Neil Aldridge / Black-backed Jackal (Canis mesomelas) pups waiting at their den on Mashatu Game Reserve, Tuli, Botswana.

Neil Aldridge / Two adult African jacanas (Actophilornis africanus) flying over reedbeds, Selinda Spillway, northern Botswana.

Neil Aldridge / African fish eagle (Haliaeetus vocifer) flying, Selinda Spillway, northern Botswana.

Neil Aldridge / African fish eagle (Haliaeetus vocifer) standing on the banks of the Chobe River, Chobe National Park, Botswana.

Neil Aldridge / Portrait of an African darter (Anhinga rufa) on the Chobe River, Chobe National Park, Botswana.

Neil Aldridge / Yellow-billed stork (Mycteria ibis) catching a young barbel or catfish in the shallows of the Chobe River, Chobe National Park, Botswana.

Neil Aldridge / Yellow-billed oxpecker (Buphagus africanus) perched on the back of an African buffalo (Syncerus caffer) on the banks of the Chobe River, Chobe National Park, Botswana.