Jack Dykinga / Sunflower flower (Helianthus petiolaris) at Sunset Crater National Monument, Arizona

Laurie Campbell / Mountain pansy (Viola lutea) flowers, Strathspey, Cairngorms National Park, Scotland, June

Sergey Gorshkov / Aerial view of Caribou / Reindeer (Rangifer tarandus) trotting through shallow water, Kamchatka, Far east Russia, August

Aflo / N-17405 Sunflower {Helianthus annuus}

Neil Lucas / Common poppies (Papaver rhoeas) and Corn marigold (Chrysanthemum segetum) growing in a Wheat field, UK

Sandra Bartocha / Oxeye/Marguerite daisies (Leucanthemum vulgare), Potsdam, Brandenburg, Germany.

Stephen Dalton / Ethiopian praying mantis {Miomantis abyssinica} in flight

Markus Varesvuo / Black Woodpecker (Dryocopus martius) flying, Finland

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) alpha male 'Ferdinand' aged 19 years resting. Gombe National Park, Tanzania.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) male 'Apollo' aged 32 years head and shoulders portrait. Gombe National Park, Tanzania.

Roland Seitre / Tasmanian devil (Sarcophilus harrisii) portrait, Australian Reptile Park, Gosford, New South Wales, Australia. Captive. Endangered species.

Enrique Lopez-Tapia / Children playing with fishes on a fishing boat, Eticoga, Orango Island, Guinea-Bissau, December 2013.