Matthew Maran / Great created grebe (Podiceps cristatus) with chick following, and person swimming in pond, Hampstead Heath, London, July 2014.

Mark MacEwen / Japanese macaque (Macaca fuscata) sleeping at hot spring in Jigokudani, Yaenkoen, Nagano, Japan, February.

Mike Read / White stork (Ciconia ciconia) pair silhouetted on nest at sunset near Castro Verde, Alentejo, Portugal, February.

Juan Carlos Munoz / Two Great egrets (Ardea alba) wading, silhouetted at dawn, Keoladeo National Park, Bharatpur, Rajasthan, India.

Jane Burton / Siamese fighting fish (Betta splendens) 'phantom' coloured male displaying to a female, captive from Malaysia and Thailand.

Florian Möllers / White stork (Ciconia ciconia) adult portrait, captive, Vogelpark Marlow, Germany, May.

Jack Dykinga / Sandhill crane (Grus canadensis) landing in icy pond filled with snow geese (Chen caerulescens) Bosque del Apache, New Mexico. January 2013

Andrew Parkinson / Gannet (Morus bassanus) adult stretching its wings. Shetland Islands, Scotland, UK, September.

Barrie Britton / Southern Giant Petrel (Macronectes giganteus), St Andrew's Bay, South Georgia. Photograph taken on location for the BBC Frozen Planet series, October 2009.

George Sanker / Two Least Chipmunks (Tamias minimus) sitting on tree stump feeding, Yellowstone National Park, Wyoming, USA, October, crop of 1373882

Sven Zacek / Two Mute Swans (Cygnus olor). Estonia, Europe, February.

Stefan Huwiler / Edible Frogs (Rana esculenta) on log in water. Switzerland, Europe, July.