Chris O'Reilly / Female Great spotted woodpecker (Dendrocopus major) perched on a lichen covered branch, Cairngorm NP, Scotland, UK, winter

Chris O'Reilly / Red fox (Vulpes vulpes) walking through snow, Norway, winter

Chris O'Reilly / Red fox (Vulpes vulpes) hunting in snow, Norway, winter

Chris O'Reilly / Male Rock ptarmigan (Lagopus mutus) on rock, winter plumage, Cairngorm mountains, Cairngorm NP, Scotland, UK, winter

Chris O'Reilly / Red oak {Quercus rubra} close-up of leaf showing autumn colour change, UK, Sequence 3/3

Chris O'Reilly / Oak tree in field (Quercus robur) Derbyshire, UK. Sequence, May

Chris O'Reilly / Oak tree {Quercus robur} Nottinghamshire, UK, December, sequence 4/4

Chris O'Reilly / Oak tree {Quercus robur} Nottinghamshire, UK, October, sequence 3/4

Chris O'Reilly / Common snail {Helix aspersa} Adult on moss covered stone at night in rain, Garden, Autumn, Derbyshire, UK

Chris O'Reilly / Electricity pylons, Northumbria, UK

Chris O'Reilly / European rabbit {Oryctolagus cuniculus} juvenile looking alert, Backlit, UK

Chris O'Reilly / Red deer stag shaking off mud after wallowing {Cervus elaphus} Scotland, UK