Guy Edwardes / Allen's / Lesser gallinule (Porphyrio alleni) walking on waterlilies, Chobe River, Botswana.

Guy Edwardes / Black crake (Amaurornis flavirostra) standing on lily pads, Chobe River, Botswana.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August, 2016.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August.

Guy Edwardes / Gaada Stack, Foula, Shetland, Scotland, UK. August, 2014.

Ben Hall / Orcas (Orcinus orca) pair in sea surrounded by mountains, Iceland, January.

Wim van den Heever / Blue wildebeest (Connochaetes taurinus) leaping into Mara River, Masai Mara, Kenya.

Gerrit Vyn / Rain showers over sagebrush-steppe at the foot of the Sawtooth Mountains. Clark County, Idaho, USA, June.

Alex Hyde / Red deer herd (Cervus elaphus) moving over mountain ridge in heavy snow. Cairngorms National Park, Scotland. January.

Denis-Huot / Group of male African lions (Panthera leo) resting with storm clouds overhead, Masai-Mara Game Reserve, Kenya. September.

Floris van Breugel / Aurora Borealis over yellow tent lit from within and mountainous scenery, Arrigetch Peaks, Gates of the Arctic National Park, Brooks Range, Alaska, USA, August 2014.

Staffan Widstrand / Hoatzin birds (Opisthocomus hoazin) perched on branch, Napo wildlife lodge, Amazonas, Ecuador, South America, April.