The ptarmigan is a master of disguise - matching its Highland surroundings perfectly by turning snow-white in winter and rock-grey in summer. It is confined to the mountains of Scotland, so is…

Wild privet is a shrub of hedgerows, woodlands and scrub, but is also a popular garden-hedge plant. It has white flowers in summer and matt-black berries in winter that are very poisonous.

Our largest bat, the noctule roosts in trees and can be seen flying over the canopy in search of insect-prey, such as cockchafers. Like other bats, it hibernates over winter.

As its name suggests, the birch shieldbug can be found feeding on silver birch, and sometimes hazel, in mixed woodland. Adults hibernate over winter, emerging in spring to lay their eggs.

The stock dove looks very much like the woodpigeon, but without the white neck and wing patches. It can be spotted in woodlands and parks, and on farmland in winter, but rarely visits our gardens…

The sweet chestnut is famous for its shiny brown fruits, or 'chestnuts', that are wrapped in a spiky, green casing and make a tasty winter treat. Look for this tree in woodlands in south…

The velvet shank can be found clustered on the dead and dying wood of deciduous trees, such as elm, ash, beech or oak. It has a bright orange cap and can be seen throughout winter.

The jackdaw is a small, black-capped crow of woodlands, parks, towns and coast. It is a well-known thief, stealing other birds' eggs and breaking into garden feeders.