Brian Bevan / Male European cuckoo (Cuculus canorus) trying to mate with a decoy female, used as part of a scientific study, Bedfordshire, England, UK, May.

Brian Bevan / Male European cuckoo (Cuculus canorus) trying to mate with a decoy female, used as part of a scientific study, Bedfordshire, England, UK, May.

Tony Wu / Bowhead whale (Balaena mysticetus), group socialising in shallow water, aerial view. Part of larger group of more than 50 whales congregating, Sea of Okhotsk sub-population, Russia.

Morley Read / Slow motion clip of a Linnaeus' sipo snake (Chironius exoletus) with open mouth, part of threat display, Amazon rainforest, Orellana Province, Ecuador.

John Chan / Crenulated fiddler crab (Uca crenulata) waving its major claw at another crab, part of a courtship display, Southern California, USA, June.

Tony Wu / Humphead parrotfish (Bolbometopon muricatum) shoal spawning in early morning, part of mass aggregation of thousands of fish. Caroline Islands, Palau.

David Woodfall / Wild cat (Felis sylvestris) portrait, part of captive breeding project at Alladale Estate, Scotland, UK, October.

Derek Galon / Damaged forest overgrown by various vines, a typical scene in western part of Dominica, West Indies. After hurricane Maria an unprecedented number of vines took advantage of suddenly open spaces in th...

Jabruson Motion / Conservation workers carrying a sedated Sumatran orangutan (Pongo abelii) towards vehicles and a transport box, part of a relocation programme, Sei Serdang, Prima, Batang Serangan, Langkat, North Suma...

Jurgen Freund / Moral eels, Urchins, Cuttlefish, Shrimp and other marine life living within a discarded tyre and fishing net under a ships' harbour, Maluku, Indonesia. November.

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 / 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...

Ernie Janes / Sea asters (Aster tripolium) in discarded car tyres, Norfolk, England, UK. September.

Inaki Relanzon / Arabian Oryx (Oryx leucoryx) at sunset. Previously extinct in the wild, their conservation status is now stable thanks to conservation efforts.This male is part of a reintroduction program in Dubai, U...

John Waters / Timelapse of flies feeding on the tip of a Common stinkhorn fungus (Phallus impudicus), Mendips, Somerset, UK, July.

David Tipling / King penguins (Aptenodytes patagonicus) pair interacting, part of courtship, Gold Harbour South Georgia, January

Markus Varesvuo / Japanese / Red-crowned crane (Grus japonicus) two calling and dancing, part of bonding and courtship display, Hokkaido Japan February

Fiona Rogers / Mountain gorilla (Gorilla gorilla beringei) female portrait , part of the 'Munyanga' group. Virunga National Park, Democratic Republic of Congo, March.

Carol Walker / Wild Mustang horse rearing, Pryor mountains, Montana, USA. June.

Nick Upton / Female Eurasian beaver (Castor fiber) and five kits feeding on a Willow (Salix) sapling, River Otter, Devon, England, UK, July. Part of Devon Wildlife Trust's Devon Beaver Trial.

Chris & Monique Fallows / Long-beaked common dolphin (Delphinus capensis) breaching in front of large ship during sardine run, East London, South Africa, June.

Jabruson Motion / Chainsaw operator cutting down African oil palm ( Elaeis guineensis) in a plantation within the Protected Area of the Leuseur Ecosystem, part of a programme of habitat restoration, Tenggulun, Aceh Tam...

Cyril Ruoso / Inmates of the Cedar Creek Corrections Center raising endangered Oregon spotted frog (Rana pretiosa) Prisoners in this facility are raising endangered frogs for release in the wild, as part of the Sus...

Dietmar Nill / European hedgehog (Erinaceus europaeus) in road at night, with approaching car headlights, Mossingen, Baden-Wurttemberg, Germany, October.

Danny Green / Atlantic Puffin (Fratercula arctica) pair bill rubbing part of courtship ritual, Skomer Island, Wales, UK, May

Willem Kolvoort / Green Turtle (Chelonia mydas) hatchling swims towards the deep part of the sea to escape from possible predators, Anse de Mais, West Grande Terre, Aldabra, Indian Ocean

Willem Kolvoort / Green Turtle (Chelonia mydas) hatchling swims towards the deep part of the sea to escape from possible predators, Anse de Mais, West Grande Terre, Aldabra, Indian Ocean

Willem Kolvoort / Green Turtle (Chelonia mydas) hatchling swims towards the deep part of the sea to escape from possible predators, Anse de Mais, West Grande Terre, Aldabra, Indian Ocean

Bence Mate / Montezuma oropendola (Psarocolius montezuma) hanging upside down as part of a courtship display. Costa Rica.

Edwin Giesbers / European bison (Bison bonasus) close up portrait showing horns, Zuid-Kennemerland National Park, the Netherlands. January. Reintroduced species.

Brent Stephenson / Type B Killer whale (Orca orcinus) surfacing, close-up, Antarctic Sound, Antarctic Peninsula, Antarctic, January.

Claudio Contreras / Whale shark (Rhincodon typus) feeding view of tail, Isla Mujeres, Caribbean Sea, Mexico, August. Vulnerable species.

Juan Carlos Munoz / Close up of horse wearing bridle, Sierra de Gredos, Avila, Castile and Leon, Spain.

Juan Carlos Munoz / Close up of horse wearing bridle, Sierra de Gredos, Avila, Castile and Leon, Spain.

Franco Banfi / Humboldt squid (Dosidicus gigas) at night off Loreto, Sea of Cortez, Baja California, Mexico, East Pacific Ocean.

Franco Banfi / Beak and tentacles of Humboldt squid (Dosidicus gigas) at night off Loreto, Sea of Cortez, Baja California, Mexico, East Pacific Ocean.

Inaki Relanzon / Keeper examining African elephant calf's (Loxodonta africana) trunk, David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Wim van den Heever / Cape Buffalo (Syncerus caffer) in darkness, Masai Mara, Kenya.

Bence Mate / Great egret (Ardea alba) close up of feathers, Lake Csaj, Pusztaszer, Hungary, December. Winner of the Portfolio category of the Terre Sauvage Nature Images Awards competition 2015.

Sven Zacek / Ural owl (Strix uralensis) female feeding her young with part of a pellet it has regurgitated. Estonia, May.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Gremlin' aged 40 years holding female baby aged 2, her granddaughter. Gombe National Park, Tanzania. Gremlin took the new born baby from he...

Loic Poidevin / Reindeer (Rangifer tarandus) calf next to mother's legs, Finland, April.

Alex Hyde / Round-leaved sundew (Drosera rotundifolia) backlit at sunset. Isle of Mull, Scotland. June. Highly commended in the Botanical Britain Category of the British Widllife Photography Awards (BWPA) Competi...

Jabruson Motion / Close up of a baby Mountain gorilla (Gorilla beringei beringei) looking at the camera before leaving the frame, part of the À™NyakamweÓ family group, Bukima, Virunga National Park, North Kivu, Democ...

Cyril Ruoso / Close up of Sumatran rhinoceros (Dicerorhinus sumatrensis) female close up, part of a breeding program, Way Kambas National Park, Sumatra, Indonesia.

Cyril Ruoso / Close up of Sumatran rhinoceros (Dicerorhinus sumatrensis) female feeding, part of a breeding program, Way Kambas National Park, Sumatra, Indonesia.