Marie Read / Common redpoll (Carduelis flammea), male perched in alder (Alnus rugosa) during a snowstorm in winter, New York, USA, January.

Frederique Olivier / Drifting snow in high wind, Antarctica.

Benjamin Barthelemy / Long exposure of tidal water flowing off rocks, with the Okshornan Mountains in the background, Isle of Senja, Troms, Norway, February 2015.

Sven Zacek / Pink algae in fresh snow on the coast of the Baltic Sea, Lahemaa National Park, Northern Estonia. December 2012.

Orsolya Haarberg / The Varangerfjord at Skallelv at sunset, Varanger peninsula, Vadso, Finnmark, Norway, February 2006

Stefan Huwiler / Matterhorn at sunrise in autumn with reflection in the Riffelsee. Zermatt, Valais, Switzerland, Europe, October 2008.

Hermann Brehm / Blue Tit (Parus caeruleus) on Guelder Rose branch with red berries. Bavaria, Germany, December.

Andy Rouse / Sunset over mountains, South Georgia, January 2006

Jack Dykinga / Cacti in snow with fog at sunrise, Saguaro National Park, Arizona, USA

Wild Wonders of Europe / Zacek / Snow covered trees, Riisitunturi National Park, Finland, February 2009

Staffan Widstrand / Polar bear resting at sunset {Ursus maritimus} Arctic

Staffan Widstrand / Arctic landscape in winter light, Svalbard, Spitzbergen, Norway