Europe's largest frog is not naturally found in the UK, but was introduced to Kent and has spread throughout the southeast.

Once a rare visitor to the UK, this striking gull is now found nesting here in large colonies.

Common couch is a tall, tuft-forming grass of roadside verges, waste ground and arable land. It is very tough and can shade out more delicate plants. Look for flat, blade-like leaves and thin…

The common lime is a tall, broadleaf tree that is a natural hybrid between the large-leaved and small-leaved limes. It can be seen in a variety of habitats, and has been widely planted along roads…

A tall, broad tree of woodlands, roadsides and parks, the introduced horse chestnut is familiar to many of us the 'conker' producing tree - its shiny, brown seeds appearing in their…

Living up to its name, the long-tailed tit can be easily recognised by its long tail. It is a small, pretty, pink, black and white bird that can be seen in woodlands, gardens and parks.

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…

This pretty, speckled moth is now a rare sight, found only in a few parts of southern England.

The blackbird of the mountains, ring ouzels can be found breeding on upland moors and rocky crags in summer.

This beautiful moth is often found resting on leaves, though it does also fly during the day.

This strange furry creature often found washed ashore after storms is actually a kind of worm!