Nick Upton / Pulteney bridge and weir, Bath, UK, March 2016.

Cyril Ruoso / Alpine newt (Ichthyosaura alpestris) swimming in stream, heading to pond in breeding season, Alps, France, June..

Cyril Ruoso / Alpine newt (Ichthyosaura alpestris) swimming in stream, heading to pond in breeding season, Alps, France, June..

Cyril Ruoso / Great crested newt (Triturus cristatus) female on the bottom of a pond, Deux Cuvres. France

Cyril Ruoso / Alpine newt (Ichthyosaura alpestris) swimming in stream, heading to pond in breeding season, Alps, France, June..

Cyril Ruoso / Alpine newt (Ichthyosaura alpestris) swimming in stream, heading to pond in breeding season, Alps, France, June..

Cyril Ruoso / Alpine newt (Ichthyosaura alpestris) swimming in stream, heading to pond in breeding season, Alps, France, June..

Cyril Ruoso / Great crested newt (Triturus cristatus) male in breeding colours, seen from underwater, Yonne, France

Cyril Ruoso / Alpine newt (Ichthyosaura alpestris) underwater view of male in breeding colours, Yonne, France

Cyril Ruoso / Alpine newt (Ichthyosaura alpestris) underwater view of male in breeding colours, Yonne, France

Cyril Ruoso / Burrowing owl (Athene cunicularia) San Fernando Reserve, Nazca desert, Peru

Cyril Ruoso / Canada goose (Branta canadensis) flying over Conboy Lake National Wildlife Refuge in spring, Washington, USA.

Cyril Ruoso / Female Sika deer (Cervus nippon) looking up, Yakushima Island, Japan, December.

Cyril Ruoso / Sika deer (Cervus nippon) female, Yakushima Island, Japan, December.

Cyril Ruoso / Whooper swan (Cygnus cygnus) head portrait, East Iceland, May.

Cyril Ruoso / Whooper swan (Cygnus cygnus) on water with reflection, East Iceland, May.

Cyril Ruoso / Whooper swan (Cygnus cygnus) on water, East Iceland, May.

Cyril Ruoso / Whooper swan (Cygnus cygnus) portrait, on water, East Iceland, May.

Cyril Ruoso / Male Whooper swan (Cygnus cygnus) running accross water surface, chasing intruder from nesting area, East Iceland, May.

Cyril Ruoso / Whooper Swan (Cygnus cygnus) male and female courting, East Iceland, May.

Cyril Ruoso / Arctic fox (Alopex lagopus) cub, a week after first leaving den, Iceland, June.

Cyril Ruoso / Arctic fox (Alopex lagopus) cub portrait, a week after first leaving the den, Iceland, June.

Cyril Ruoso / Common ringed plover (Charadrius hiaticula) in shallow water, Onundarfjordur Fjord, Iceland, June.

Cyril Ruoso / Two Whooper swans (Cygnus cygnus) on water, Onundarfjordur Fjord, West Fjords, Iceland, June.

Cyril Ruoso / Roe deer (Capreolus capreolus) buck in velvet at forest edge, France, February.

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species feeding in tree, Paris region, France, September

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species feeding in tree, Paris region, France, September

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species feeding in tree, Paris region, France, September

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species perching in tree, Paris region, France, September

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, small flock in flight, Paris region, France, September

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, at nest in tree, Paris region, France, August

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, at nest in tree, Paris region, France, August

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, at nest in tree, Paris region, France, August

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, at nest in tree, Paris region, France, August

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, feeding in tree, Paris region, France, August

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, feeding in tree, Paris region, France, August

Cyril Ruoso / Canada goose with gosling (Branta canadensis) Seine Valley, France, May

Cyril Ruoso / Canada goose (Branta canadensis) head profile portrait, Seine Valley, France, May

Cyril Ruoso / Rose-ringed Parakeet (Psittacula krameri) introduced species, blurred motion of flying in front of tree, Paris region, France, August

Cyril Ruoso / Canada geese (Branta canadensis) family with Nutria foraging in front (Myocastor coypus) Seine Valley, France, May

Cyril Ruoso / Canada geese (Branta canadensis) family with Nutria foraging in front (Myocastor coypus) Seine Valley, France, May

Cyril Ruoso / Canada goose (Branta canadensis) gosling portrait, Seine Valley, France, May

Cyril Ruoso / Canada geese (Branta canadensis) in heated exchange, Seine Valley, France, May

Cyril Ruoso / Canada goose (Branta canadensis) adult profile portrait, Seine Valley, France, May

Cyril Ruoso / Canada goose (Branta canadensis) goslings by water, Seine Valley, Aube, France, May

Cyril Ruoso / Canada goose (Branta canadensis) goslings by water, Seine Valley, Aube, France, May

Cyril Ruoso / Canada goose (Branta canadensis) gosling by water, Seine Valley, Aube, France, May

Cyril Ruoso / Canada goose (Branta canadensis) three goslings by water, Seine Valley, Aube, France, May

Cyril Ruoso / Canada goose (Branta canadensis) gosling by water, Seine Valley, Aube, France May

Cyril Ruoso / Madagascar scops owl (Otus rutilus) Berenty reserve, Madagascar.

Cyril Ruoso / Red fox (Vulpes vulpes) cub, Burgundy, France, May.

Cyril Ruoso / Mealy amazon parrit (Amazona farinosa) Amazon, Peru.

Cyril Ruoso / Mealy amazon parrot (Amazona farinosa) yawning, Amazon, Peru.

Cyril Ruoso / Various parrots from left to right, Orange winged amazon (Amazona amazonica), Scaly-naped amazon (Amazona mercenaria), two Chestnut-fronted macaws (Ara severus) for sale in Yurimanguas market, Amazo...

Cyril Ruoso / Young girl with Yellow-chevroned parakeets (Brotogeris chiriri) in Yurimaguas market, Amazon, Peru. November 2006.

Cyril Ruoso / Blue and yellow macaw (Ara ararauna) captive bird playing with German shepherd dog, Amazon, Peru.

Cyril Ruoso / Mountain parakeet (Psilopsiagon aurifrons) flock perched on cacti, Colca Canyon, Andes, Peru, November.

Cyril Ruoso / Mountain parakeet (Psilopsiagon aurifrons) flock perched on cacti, Colca Canyon, Andes, Peru, November.

Cyril Ruoso / Fire salamander (Salamandra salamandra) in forest at dusk, Yonne, Burgundy, France, April.

Cyril Ruoso / Whooper swan (Cygnus cygnus) Iceland, May.

Cyril Ruoso / Whooper swan (Cygnus cygnus) Iceland, May.

Cyril Ruoso / Red deer (Cervus elephus) male in mist during autumn rut, Denmark, September.

Cyril Ruoso / Dhole (Cuon alpinus) female feeding on Chital deer (Axis axis) Bandhavgarh National Park, India.

Cyril Ruoso / Chital deer (Axis axis), herd grazing at edge of forest, Bandhavgarh National Park, India.

Cyril Ruoso / Northern plains langur (Semnopithecus entellus) and Chital deer (Axis axis), Bandhavgarh National Park, India.

Cyril Ruoso / Chital deer (Axis axis) herd, with males in velvet with females Bandhavgarh National Park, India.

Cyril Ruoso / Barasingha (Rucervus duvaucelii) male, Kanha National Park, India.

Cyril Ruoso / West African wood-owl (Strix woodfordii) fledgling portrait, Cross River State, Nigeria.

Cyril Ruoso / Children releasing Harbour seal (Phoca vitulina), whilst watched by spectators, on the shore of Bay of Somme, France, 3rd October 2004.

Cyril Ruoso / Collared scops owl (Otus lettia) in dead tree, Ranthambore National Park, Rajasthan, India.

Cyril Ruoso / Red deer (Cervus elaphus elaphus) stag flehmen response, walking towards hind during autumn rut, Denmark, September.

Cyril Ruoso / Bird show with trained Blue-and-yellow macaw (Ara ararauna) and Sulfur crested cockatoo (Cacatua galerita) riding bicycles. Singapore Bird Park.

Cyril Ruoso / Yellow naped amazon parrot (Amazona auropalliata) singing into a microphone, Singapore Bird Park.

Cyril Ruoso / Harbor seal (Phoca vitulina) pup found on beach alone and taken in for rehabilitation by Picardy Nature Asosciation. Bay of Somme, Picardy, France.

Cyril Ruoso / Harbor seal (Phoca vitulina) orphan, cared for Picardy Nature Assocation for later release. Picardy, France.

Cyril Ruoso / Harbor seal (Phoca vitulina) orphan, cared for Picardy Nature Assocation for later release. Picardy, France.

Cyril Ruoso / Person feeding Harbor seal (Phoca vitulina) orphan, swimming and feeding on fish from carers hand, cared for by Picardy Nature Association. Bay of Somme, Picardy, France.

Cyril Ruoso / Harbor seal (Phoca vitulina) orphan cared for by Picardy Nature Association, Bay of Somme, Picardy, France.

Cyril Ruoso / Volunteers carrying rehabilitated Harbour seal (Phoca vitulina) to the shore to be released, watched by spectators. Bay of Somme, France, 3rd October 2004.

Cyril Ruoso / Rehabilitated Harbour seal (Phoca vitulina) on shore after it was released, watched by spectators. Bay of Somme, France, 3rd October 2004.

Cyril Ruoso / Brown rats (Rattus norvegicus) foraging at railway station, Agra, India.

Cyril Ruoso / Brown rat (Rattus norvegicus) foraging at railway station, Agra, India.

Cyril Ruoso / Forest owlets (Athene blewitti) Ranthambor National Park, India.

Cyril Ruoso / Chital deer (Axis axis) female portrait, Bandhavgarh National Park, India.

Cyril Ruoso / Roe deer (Capreolus capreolus) buck in a stubble field, Yonne, Burgundy, France, July.

Cyril Ruoso / Roe deer (Capreolus capreolus) buck in a stubble field, Yonne, Burgundy, France July

Cyril Ruoso / Red fox (Vulpes vulpes) in the distance walking through field, Yonne, Burgundy, France. July.

Cyril Ruoso / Roe deer (Capreolus capreolus) female in distance in green wheat crop, Yonne, Burgundy, France. April.

Cyril Ruoso / Roe deer (Capreolus capreolus) female in fog, Yonne, Burgundy, France, September.

Cyril Ruoso / Roe deer (Capreolus capreolus) female in fog, Yonne, Burgundy, France, September.

Cyril Ruoso / Roe deer (Capreolus capreolus) female in meadow, Yonne, Burgundy, France, September.

Cyril Ruoso / Roe deer (Capreolus capreolus) female in meadow, Yonne, Burgundy, France, September.

Cyril Ruoso / Roe deer (Capreolus capreolus) female in meadow, Yonne, Burgundy, France, September.

Cyril Ruoso / Roe deer (Capreolus capreolus) buck running in a meadow, Yonne, Burgundy, France.

Cyril Ruoso / Roe deer (Capreolus capreolus) female in a foggy meadow, Yonne, Burgundy, France, August.

Cyril Ruoso / Roe deer (Capreolus capreolus) bucks fighting in field,, Yonne, Burgundy, France, August.

Cyril Ruoso / Roe deer (Capreolus capreolus) bucks fighting in field,, Yonne, Burgundy, France, August.