A male Indian one-horned rhino is chased away by another male rhino in the Pobitora wildlife sanctuary, Morigaon district of Assam, north-east India. Fights among the rhinos are common in mating seasonPhotograph: EPA
Capercaillie (Tetrao urogallus) male flying through pine forest, Cairngorms NP, Highlands, Scotland. Photographer Peter Cairns: These are normally very shy birds but this male was so sexually charged he was protecting his territory against anything from foxes to cars to photographers. These are big birds and when one flies at you at full speed, it's time to retreat! Did you know? The capercaillie is the world's largest grouse and is Britain's fastest declining bird. Picture: Peter Cairns/2020
Red deer (Cervus elaphus) hind chasing Jackdaw (Corvus monedula) off her back, Richmond Park, London. Photographer Danny Green comments: Everything in nature is connected. Jackdaws know that the red deer hind provides very useful nesting material. Did you know? Red deer are our largest land mammal and help shape our woodlands. Picture: Danny Green/2020VISION / Rex Features
An RSPB staff member holds a white tailed sea eagle chick (Haliaeetus albicilla), part of the East Scotland Sea Eagle reintroduction project, Fife, Scotland. Did you know? Sea eagles were wiped out in Britain in 1916 but following a series of reintroductions, around 80 pairs now breed in Scotland. Picture: Peter Cairns/2020VISION / Rex Features
Basking shark (Cetorhinus maximus) with mouth wide open feeding on plankton concentrated in surface waters close to the island of Coll, Inner Hebrides, Scotland. Photographer Alex Mustard comments: I can't think of a wildlife experience to top it: the moment when Britain's biggest mouth emerges from the blue and lumbers past my camera. Most uses of the sea involve taking what we want and dumping what we don't which is a shame as the sea is as much a part of our lives as the land. Did you know? N
Swans and koi carp vying for space in a pond in Chengdu, China, by Yolanda Harris, Amersham, Buckinghamshire.