Guy Edwardes / Gold Hill in winter, Shaftesbury, Dorset, England, UK. January 2010.

Bruno D'Amicis / Red fox (Vulpes vulpes) walking through snow. Central Apennines, Molise, Italy, February.

Tui De Roy / Galapagos hawk (Buteo galapagoensis) perched over sulphurous slope, Galapagos, Ecuador. Vulnerable species.

Danny Green / Bison (Bison bison) herd walking in line in snow, Yellowstone National Park, Wyoming, USA, February

Roger Powell / Small flock of Brent Geese (Branta bernicla) in flight..Texel Island, The Netherlands, Europe

Andrew Parkinson / Brown hare (Lepus europaeus) adult running in wintery landscape. Derbyshire, UK, January.

Juergen Freund / Dingo (Canis lupus dingo) at Devils Marbles, Northern Territory, Australia.

Ole Jorgen Liodden / Boy on skis going up slope, framed by snow laden tree, Norway, February 2014.

David Pattyn / Alpine ibex (Capra ibex) male in deep snow with icicles behind, Gran Paradiso National Park, Italy. December

Erlend Haarberg / Arctic fox (Alopex lagopus) silhouetted against stormy sky, Dovrefjell-Sunndalsfjella National Park, Norway, July.

Denis-Huot / Bushfires in dry season on the Isuria escarpment, Masai-Mara Game Reserve, Kenya. October 2007.

Staffan Widstrand / American Bison (Bison bison) herd in habitat, Yellowstone National Park, Wyoming, USA, October.