Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) males attempting to mate with female emerging from pupa, rainforest Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) pupae on Heliconia leaf, rainforest Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) eggs and larvae on leaves of Passionvine (Passiflora pittieri) rainforest, Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) feeding on Lantana flowers (Lantana sp) which are Mullerian mimics, Costa Rica

Michael & Patricia Fogden / Heliconius Butterfly (Heliconius hewitsoni) feeding on Lantana flowers (Lantana sp) which are Mullerian mimics, Costa Rica

Joel Sartore / Photo Ark / Hewitson's longwing (Heliconius hewitsoni) portrait, Selvatura Park, Costa Rica. Captive.

Ashley Cooper / Needle ice on Holly leaves (Ilex europaeus) in a woodland in Ambleside Cumbria UK. December 2008

SCOTLAND: The Big Picture / Mountain hare (Lepus timidus) sheltering in blizzard conditions, Cairngorms National Park, Scotland, UK, January.

Alastair MacEwen / Timelapse of frost forming on European beech (Fagus sylvatica) leaves, controlled conditions, Somerset, England, UK.

Alastair MacEwen / Timelapse of frost forming on Rose (Rosa) hips, controlled conditions, Somerset, England, UK.

Luis Quinta / Storm waves off the coast of Praia do Norte, Nazare, Portugal. January.

Danny Green / Whooper swans (Cygnus cygnus) two in flight, during snowfall, Lake Kussharo, Japan, February

Denis-Huot / African elephant (Loxodonta africana) standing in the rain, Masai-Mara Game Reserve, Kenya. March.

Benoit Stichelbaut / Large waves crash into Le Guilvinec during Storm 'Petra', Finistere, Brittany, France. 5th February 2014. France, Bretagne, Finistere, Le Guilvinec, Tempete "Petra", le 5 fevrier 2014.

Benoit Stichelbaut / Massive wave crashing into Lesconil during Storm 'Petra', Finistere, Brittany, France. 5th February 2014. France, Bretagne, Finistere, Lesconil, Tempete "Petra", le 5 fevrier 2014.

Benoit Stichelbaut / Rough seas at Creac'h lighthouse during Storm 'Ruth', Ile d'Ouessant, Armorique Regional Park, Iles du Ponant, Finistere, Brittany, France, Iroise Sea. 8th February 2014. France, Bretagne, Finister...

Markus Varesvuo / Guillemots (Uria aalge) in flight in snow, Vardo, Norway, March. Winner of 2nd Prize in the Nature (Single images) category of the World Press Photo Competition 2014.

Diane McAllister / Japanese Macaque (Macaca fuscata) pair rest together on a rock near the river in Jigokudani, Japan.