A recent colonist to south east England, the metallic-green willow emerald damselfly spends much of its time in the willow and alder trees that overhang ponds, lakes and canals.

A pretty and distinctive little waterbird, the mandarin duck was introduced from the Far East as its name suggests. Oddly for a duck, it nests in trees, sometimes high above the water.

This bog-loving butterfly is mostly found in the north of the UK, where it takes to the wing in summer.

Only a few pairs of snow bunting breed here, so look out for this striking black-and-white bird in winter around Scotland, the North West and the East coast of England.

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…

Look out for this weevil on oak trees, where females lay their eggs inside acorns.

The small, brown Dartford warbler is most easily spotted when warbling its scratchy song from the top of a gorse stem. It lives on lowland heathland in the south of England, where it nests on the…

Their long narrow shells are a common sight on our shores, especially after storms, but the animals themselves live buried in the sand.

The sinuous otter is an excellent swimmer and can be seen hunting in wetlands, rivers and along the coast - try the west coast of Scotland, West Wales, the West Country or East Anglia for the best…