Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016. COP26 Countdown Photo Competi...

Krijn Trimbos / Great crested grebe (Podiceps cristatus) pair in 'weed dance' courtship display, The Netherlands, March.

Ross Hoddinott / Corfe Castle, early morning llight and mist, Corfe Castle, Dorset, UK. September 2014.

Sven Zacek / Two Roe deer (Capreolus capreolus) sniffing each other in the snow, Vorumaa, Estonia, January. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Kirkendall-Spring / Camp site at night above Appleton Pass in Olympic National Park, Washington, USA, August 2013.

Denis-Huot,Denis-Huot / Greater flamingos (Phoenicopterus ruber roseus) males displaying, lake Nakuru, Kenya

Ben Hall / Great crested grebe (Podiceps cristatus) pair performing courtship displaying at dawn, backlit and surrounded by mist, Cheshire, UK, April. Highly honoured in the Birds Category of Nature's Best Windl...

Felicity Lanchester,Felicity Lanchester / View of a BBC filming camp at night, on location for the Sahara episode of the 'Africa' series, Egypt, September 2011.

Michael Pitts,Michael Pitts / Coconut palms (Cocos nucifera) with the moon rising, Tobago, Caribbean.

Bence Mate / Pair of European bee-eaters (Merops apiaster) with courtship offering of insect prey, Pusztaszer, Kiskunsagi National Park, Hungary

Denis-Huot,Denis-Huot / Topi (Damaliscus korrigum) at sunset, Masai-Mara Game Reserve, Kenya

Juergen Freund / Mating Green turtles (Chelonia mydas) in the reef shallows. Sipadan Island, Sabah, Malaysia, June