Guy Edwardes / Barn owl (Tyto alba) in flight above post and wildflowers, in morning light. The Hawk Conservancy Trust, Hampshire, England, UK. July. Captive.

Andrew Peacock / White Rhinoceros (Ceratotherium simum) mother and calf in grassland, Ol Pejeta Conservancy, Kenya

Neil Aldridge / Cheetah (Acinonyx jubatus) standing in early morning light, Save Valley Conservancy, Zimbabwe, Vulnerable.

Neil Aldridge / Cheetah (Acinonyx jubatus) staring back over its shoulder, black and white. Save Valley Conservancy, Zimbabwe, August.

Neil Aldridge / African wild dog (Lycaon pictus) blurred motion photograph, Save Valley Conservancy, Zimbabwe.

Neil Aldridge / African wild dog (Lycaon pictus) pup peers around the base of a giant baobab tree on Save Valley Conservancy. Zimbabwe.

Thomas Marent / Sykes Monkey (Cercopithecus albogularis) and Red-tail Monkey (Cercopithecus ascanius) hybrid, Mount Kenya Wildlife Conservancy, Kenya

Sean Crane / Zebra (Equus quagga) mother and foal near rainbow, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / White Rhinoceros (Ceratotherium simum) pair at sunrise, Lewa Wildlife Conservancy, Kenya

Sean Crane / Reticulated Giraffe (Giraffa reticulata) mother and calf, Lewa Wildlife Conservancy, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Lewa Wildlife Conservancy, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Lewa Wildlife Conservancy, Kenya

Mark MacEwen / Grevy's zebra (Equus grevyi) close-up of coat, Ol Pejeta Conservancy, Kenya, Africa.

Uri Golman / White rhinoceros (Ceratotherium simum) mother and calf browsing. Entabeni Safari Conservancy, Limpopo region, Waterberg, South Africa, October

Ann & Steve Toon / Black rhinoceros (Diceros bicornis) on savanna, Lewa Wildlife Conservancy, Laikipia, Kenya

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) with rainbow and storm clouds. Ol Pejeta Conservancy, Kenya, 2009. Threatened species.

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) with rainbow and storm clouds. Ol Pejeta Conservancy, Kenya, 2009. Threatened species.

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) grazing. Ol Pejeta Conservancy, Kenya, 2009. Threatened species.

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) grazing. Ol Pejeta Conservancy, Kenya, 2009. Threatened species.

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) grazing. Ol Pejeta Conservancy, Kenya, 2009. Threatened species.

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) grazing. Ol Pejeta Conservancy, Kenya, 2009. Threatened species.

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) grazing, Ol Pejeta Conservancy, Kenya, 2009. Threatened species.

Mark Carwardine / Southern white rhinoceros (Ceratotherium simum simum) wild animal with ranger providing round-the-clock protection. Ol Pejeta Conservancy, Kenya, 2009. Threatened species, Model released

Tui De Roy / Reticulated Giraffe (Giraffa reticulata) mother and calves, Ol Pejeta Conservancy, Kenya

Tui De Roy / African Elephant (Loxodonta africana) trio, Ol Pejeta Conservancy, Kenya

Mark Carwardine / Northern white rhinoceros (Ceratotherium simum cottoni) with horn removed, after initial release into the wild, Ol Pejeta Conservancy, Kenya, June 2010, Extinct in the wild, only eight left in captivi...

Mark Carwardine / Northern white rhinoceros (Ceratotherium simum cottoni) close-up of eye, Dvur Kralove Zoo, Czech Republic, December 2009, Extinct in the wild, only eight left in captivity, critically endangered, Part...

Mark Carwardine / Northern white rhinoceros (Ceratotherium simum cottoni) close up of eye, in enclosure at Dvur Kralove Zoo, Czech Republic, the day before departure, December 2009, Extinct in the wild, only eight left...

Jerry Monkman / Nature Conservancy employees cutting back Japanese knotweed (Fallopia japonica) in an invasive species eradication effort on the TNC's Silverweed Seep preserve in Plainfield, New Hampshire, USA.

Suzi Eszterhas / Saruni Lodge, Kalama Wildlife Conservancy, Kenya

Richard Du Toit / Cheetah (Acinonyx jubatus) male lying on back, Lewa Wildlife Conservancy, Kenya

Gerry Ellis / White Rhinoceros (Ceratotherium simum) mother with baby, Lewa Wildlife Conservancy, Kenya

Gerry Ellis / White Rhinoceros (Ceratotherium simum) mother with calf, Lewa Wildlife Conservancy, Kenya

Tui De Roy / Palm trees and water flowing on beach on Palmyra Atoll, a wet, equatorial atoll with fringing reefs, native forests and abundant seabirds, Palmyra Atoll National Wildlife Refuge, US Line Islands

Oscar Dewhurst / Long-crested eagle (Lophaetus occipitalis) perched on bush. Selenkay Conservancy, Amboseli National Park, Kenya.

Oscar Dewhurst / Nubian woodpecker (Campethera nubica) foraging on tree trunk. Ol Kinyei Conservancy, Masai Mara National Reserve, Kenya.

Oscar Dewhurst / Cheetah (Acinonyx jubatus) female and cubs. Ol Kinyei Conservancy, Masai Mara National Reserve, Kenya.

Oscar Dewhurst / Long-crested eagle (Lophaetus occipitalis) perched on tree. Selenkay Conservancy, Amboseli National Park, Kenya.

Ann & Steve Toon / African elephant bulls (Loxodonta africana) at waterhole, Khwai conservancy, Botswana, August

Ann & Steve Toon / African elephant bulls (Loxodonta africana) at waterhole, Khwai conservancy, Botswana, August

Ann & Steve Toon / Blacksmith lapwing (Vanellus armatus) eggs in nest, Khwai conservancy, Botswana, August

Ann & Steve Toon / Hooded vulture (Necrosyrtes monachus) flying, Khwai conservancy, Botswana, August

Ann & Steve Toon / Leopard (Panthera pardus) at night, female with scar, Khwai conservancy, Botswana, August

Ann & Steve Toon / Spotted hyaena (Crocuta crocuta), Khwai conservancy, Okavango delta, Botswana, August

David Fleetham / Coastline of Mo'omomi Beach, Nature Conservancy Reserve with two boys exploring. North side of Molokai, Hawaii. July 2017. Digitally stitched panorama. Model released.

Andrew Peacock / Minden / Red-bark Acacia (Vachellia reficiens) trees growing in overgrazed land, Westgate Community Conservancy, Naibelibeli Plains, Kenya

Andrew Peacock / Common Hartebeest (Alcelaphus buselaphus) herd at sunrise, Ol Pejeta Conservancy, Kenya

Andrew Peacock / Grevy's Zebra (Equus grevyi) and Burchell's Zebra (Equus burchellii) hybrid, Ol Pejeta Conservancy, Kenya

Andrew Peacock / White Rhinoceros (Ceratotherium simum) mother and calf in grassland, Ol Pejeta Conservancy, Kenya

Andrew Peacock / White Rhinoceros (Ceratotherium simum) pair, Ol Pejeta Conservancy, Kenya

Andrew Peacock / White Rhinoceros (Ceratotherium simum), Ol Pejeta Conservancy, Kenya

Eric Baccega / Rothschild giraffe (Giraffa camelopardalis rothschildi), Ruko Conservancy island, Lake Baringo, Kenya.

Eric Baccega / Rothschild giraffe (Giraffa camelopardalis rothschildi) feeding on acacia leaves, Ruko Conservancy island, Lake Baringo, Kenya.

Eric Baccega / Rothschild giraffe (Giraffa camelopardalis rothschildi) group, Ruko Conservancy island, Lake Baringo, Kenya.

Cyril Ruoso / Hippopotamus (Hippopotamus amphibius) with mouth open, Mayuni Conservancy, Namibia.

Cyril Ruoso / Hippopotamus (Hippopotamus amphibius) Mayuni conservancy, Namibia.

Cyril Ruoso / African elephant (Loxodonta africana) female and calf crossing the river, Mayuni Conservancy Area, Namibia.

Denis-Huot / Borandomestic cattle bull, Soysambu Conservancy, Kenya.

Denis-Huot / European roller (Coracias garrulus) hunting, Soysambu Conservancy, Kenya.

Pete Oxford / Fire in wetland, West Demerara Conservancy, near Georgetown, Guyana, South America

Pete Oxford / Fisherman in boat in West Demerara Conservancy, west of Georgetown, Guyana, South America

Pete Oxford / Fishing boats in the Hope canal, an irrigation canal in East Demerara Water Conservancy, coastal Guyana, South America

Pete Oxford / Hope canal, an irrigation canal in East Demerara Water Conservancy (for sugar cane and rice production) coastal area of Guyana, South America

Pete Oxford / Hope canal, an irrigation canal in East Demerara Water Conservancy (for sugar cane and rice production) coastal area of Guyana, South America

Pete Oxford / Aerial view of mixed agriculture fields of East Demerara Conservancy, east of Georgetown, Guyana, South America

Cyril Ruoso / African Elephant (Loxodonta africana) female and calf crossing river, Mayuni Conservancy, Namibia

Richard Du Toit / Male Reticulated Giraffe (Giraffa camelopardalis) leaning forward. Ol Pejeta Conservancy, Laikipia County, Kenya.

Pete Oxford / River west of Georgetown, West Demerara Conservancy, Guyana

Pete Oxford / Stilt house in river west of Georgetown, West Demerara Conservancy, Guyana

Pete Oxford / River west of Georgetown, West Demerara Conservancy, Guyana

Pete Oxford / Lily pads in wetland west of Georgetown, West Demerara Conservancy, Guyana

Pete Oxford / Wildfire on savanna east of Georgetown, East Demerara Conservancy, Guyana

Pete Oxford / Wildfire in savanna east of Georgetown, East Demerara Conservancy, Guyana

Cheryl-Samantha Owen / Dead thorn tree (Vachellia tortilis) silhouetted against the moonlight, Amboseli conservancy next to Amboseli National Park, Kenya

Roland Seitre / Cape Warthog (Phacochoerus aethiopicus) grazing, Ishaqbini Hirola Conservancy, Kenya

Sean Crane / African Lion (Panthera leo) cub nuzzling mother, Olare Orok Conservancy, Masai Mara, Kenya

Sean Crane / Black-chested Snake-Eagle (Circaetus pectoralis) flying, Olare Orok Conservancy, Masai Mara, Kenya

Sean Crane / African Lion (Panthera leo) female on Blue Wildebeest (Connochaetes taurinus) carcass while Black-backed Jackal (Canis mesomelas) impatiently looks on, Olare Orok Conservancy, Masai Mara, Kenya

Sean Crane / Thomson's Gazelle (Eudorcas thomsonii) sub-adult males play-fighting, Olare Orok Conservancy, Masai Mara, Kenya

Sean Crane / Black Rhinoceros (Diceros bicornis) pair and Cape Buffalo (Syncerus caffer) herd, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Black Rhinoceros (Diceros bicornis) pair and Cape Buffalo (Syncerus caffer) herd, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Olive Baboon (Papio anubis) shaking off rain, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Olive Baboon (Papio anubis) shaking off rain, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Cape Buffalo (Syncerus caffer) bull, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Cape Buffalo (Syncerus caffer) bull, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / African Elephant (Loxodonta africana) group grazing at sunset, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / African Elephant (Loxodonta africana) in defensive posture, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / African Elephant (Loxodonta africana) grazing, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Masai Giraffe (Giraffa tippelskirchi) amidst acacia trees, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Grant's Gazelle (Nanger granti) female and sub-adult, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Cheetah (Acinonyx jubatus) male marking tree, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Cheetah (Acinonyx jubatus) males stalking, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / African Elephant (Loxodonta africana) grazing, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / Cheetah (Acinonyx jubatus) trio marking tree with Burchell's Zebra (Equus burchellii) herd in background, Ol Pejeta Conservancy, Laikipia, Kenya