Orsolya Haarberg / Norway spruce (Picea abies) trees covered in snow, Ciuc Mountains, Transylvania, Romania, January 2015.
Erlend Haarberg / Frost covered European beech tree (Fagus sylvatica) in a snow covered field framed by frosty branches, Calonda, Harghita County, Transylvania, Romania, January.
Pal Hermansen / Whooper swans (Cygnus cygnus) flock in spring, Lake Tysslingen, central Sweden March
Nick Garbutt / Sun beam at sun rise over the Grand Canyon of the Yellowstone, Yelllowstone National Park, Wyoming, USA. January 2016.
Carol Walker / RF - Grey Andalusian mare running in snow, Berthoud, Colorado, USA. January. (This image may be licensed either as rights managed or royalty free.)
Floris van Breugel / First rays of golden sunshine hit Giant Sequoias (Sequoiadendron giganteum) covered in a winter blanket of snow and frost, Grant Grove, Sequoia / Kings Canyon National Park, California, USA November
Matthew Maran / European robin (Erithacus rubecula) Hampstead Heath, London, England, UK. January.
Eric Baccega / Nenet herders travel by Reindeer (Rangifer tarandus) sled on spring migration across tundra. Yar-Sale district, Yamal, Northwest Siberia, Russia. April 2016.
Danny Green / Atlantic Puffin (Fratercula arctica) flock resting on a snow bank, Horn°ya, Varanger, Norway, April
Eric Baccega / RF - Portrait of Harp seal (Phoca groenlandicus) pup on sea ice. Magdalen Islands, Gulf of St Lawrence, Quebec, Canada. (This image may be licensed either as rights managed or royalty free.)
Eric Baccega / Reindeer (Rangifer tarandus) herd migrating in spring dusk under moon. Yar-Sale district, Yamal, Northwest Siberia, Russia. April.
Pal Hermansen / Polar bear (Ursus maritimus) on belly and forepaws with legs stretched out behind on ice floe, Svalbard, Norway, September.
Eric Baccega / Head portrait of ice covered Reindeer (Rangifer tarandus) during storm. Yar-Sale district, Yamal, Northwest Siberia, Russia. April.
David Pattyn / Trees in Hautes Fagnes Nature Reserve in winter after snowfall. This area - Noir Flohay was burnt a few years ago and some trees are still blackened, Hautes Fagnes, Belgian Ardennes, Belgium, February...
Wim van den Heever / Sika deer (Cervus nippon) stag feeding in snow. Hokkaido, Japan, March.
Kirkendall-Spring / Snow covered trees, Amabilis Mountain, Mount Baker-Snoqualmie National Forest, Washington, USA. December 2015.
Matthew Maran / Avenue of trees in snow with benches, Kenwood Estate, Hampstead Heath, London, England, January 2013.
Ben Hall / Wren (Troglodytes troglodytes) on frost covered fern, Dunham Massey, Cheshire, UK. Winner of the Habitat Category of the British Wildlife Photographer of the Year Awards (BWPA) 2017.
Andres M. Dominguez / Portuguese oak tree leaf (Quercus faginea) and Blackberry leaf (Rubus fruticosa) leaf in ice, Sierra de Grazalema Natural Park, southern Spain, February.
Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) in snow, Utajarvi, Finland, May.
Wim van den Heever / Whooper swans (Cygnus cygnus) small flock coming into land on open field in snow storm, Hokkaido Japan.
Klein & Hubert / Domestic Tabby and white semi-longhaired cat (Felis silvestris catus) running in snow, France.
Klein & Hubert / Wirehaired Dachshund running in snow in French Alps, Haute-Savoie, France.
Brent Stephenson / Young Polar bear (Ursus maritimus) walking across melting sea ice, Scott Inlet, Baffin Island, Canadian Arctic, August. Vulnerable species.
Andy Rouse / Iceberg and mountain, Svalbard, Norway. Arctic. July.
Klein & Hubert / Siberian Husky sledge team running in snow, Vosges, France.
Andy Rouse / Polar Bear (Ursus maritimus) on pack ice, Svalbard, Arctic Norway. September.
Steven Kazlowski / Young Polar bear (Ursus maritimus) walking on newly formed pack ice, near Kaktovik, Barter Island, North Slope, Alaska, USA, October. Vulnerable species.
Pal Hermansen / The first structures of new ice, Norway
Bernard Castelein / Abstract ice pattern, Klein Schietveld, Brasschaat, Belgium, January
Wim van den Heever / Whooper swans (Cygnus cygnus) early evening in a snow storm, Lake Kussharo, Hokkaido, Japan. Taken with remote camera.
Marie Read / Red-winged Blackbird (Agelaius phoeniceus) male singing from ice-covered branch in early spring, Ithaca, New York, USA.
Cyril Ruoso / Glacier cave with icicles, Pastoruri Glacier 5200m above sea level, Cordillera Blanca, Andes, Peru
Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) landing on pack ice, Hokkaido, Japan, February.
Edwin Giesbers / Mute swan (Cygnus olor) flock on snow, Hazerswoude, The Netherlands, February.
Gerrit Vyn / White-tailed jackrabbit (Lepus townsendii) camouflaged in its winter coat. Sweetwater County, Wyoming, USA, January.
Ben Hall / Barn owl (Tyto alba) flying through heavy snowfall, Derbyshire, February.
Markus Varesvuo / Willow grouse / Ptarmigan (Lagopus lagopus) balancing on twigs feeding on buds, Inari Kiilopaa, Finland, January.
Markus Varesvuo / Willow grouse / Ptarmigan (Lagopus lagopus) walking through snow, Inari Kiilopaa, Finland, February.
Markus Varesvuo / Grey partridge (Perdis perdix) looking out of hole in snow, Liminka, Finland, February.
Graham Eaton / Partially frozen Gullfoss waterfall on the Hvita River, Southern Iceland, March 2015.
Solvin Zankl / Landscape of snow covered Oak trees (Quercus) woodland and fields, Germany. December,
Ann & Steve Toon / RF - Arctic fox vixen (Vulpes lagopus), captive, Highland Wildlife Park, Kingussie, Scottish Highlands, UK, December. (This image may be licensed either as rights managed or royalty free.)
Wim van den Heever / Whooper swans (Cygnus cygnus) group of three, camouflaged on frozen lake, Kussharo, Hokkaido Japan.
Orsolya Haarberg / Snow covered Norway spruce (Picea abies) trees at the treeline, Stubba Nature Reserve, Laponia, Sweden, February 2013.
Andres M. Dominguez / Holm oak tree (Quercus ilex) in snowfall, Sierra de Grazalema Natural Park, southern Spain, January.
David Pattyn / Avalanche coming down a steep mountain side. Gran Paradiso National Park, Italy, November.
David Pattyn / Chamois (Rupicapra rupicapra) resting in deep snow.Gran Paradiso National Park, Italy, November.