Ingo Arndt / Cape Gannet (Sula capensis) perched on a rock whilst calling, nesting colony, Lamberts Bay, South Africa.

Brent Stephenson / Young Polar bear (Ursus maritimus) walking across melting sea ice, Scott Inlet, Baffin Island, Canadian Arctic, August. Vulnerable species.

Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) reaching forward, Ikamaperou Sanctuary, Amazon, Peru.

Mark Hamblin / Reindeer (Rangifer tarandus) adult male, antlers in velvet, walking across upland moor, Cairngorms, Scotland, UK, August.

Markus Varesvuo / Black-throated diver (Gavia arctica) on water, Finland, May.

Marie Read / Baltimore oriole (Icterus galbula) male singing in spring, perched on Pear blossom (Pyrus sp.) flowers, New York, USA May.

David Pattyn / Great crested grebe (Podiceps cristatus) close-up of an adult with two young chicks. The Netherlands. June 2014

Wild Wonders of Europe / Bartocha / Poet's daffodil (Narcissus poeticus) on the Piano Grande, Monti Sibillini National Park, Italy, May.

Markus Varesvuo / Guillemot (Uria aalge) in flight over water, Norway, July

Markus Varesvuo / Bar-tailed godwit (Limosa lapponica) in flight over water, Hanko, Finland, September

Edwin Giesbers / Sumatran tiger (Panthera tigris sumatrae), captive, occurs in Sumatra, Indonesia

Bert Willaert / Marbled poison dart frog (Epipedobates boulengeri) on leaf, Ecuador.