Our smallest breeding seabird, the storm petrel is barely larger than a house martin! They mostly nest among rocks or in burrows on small offshore islands.

A summer visitor, the willow warbler can be seen in woodland, parks and gardens across the UK. It arrives here in April and leaves for southern Africa in September.

This distinctive lark is a passage migrant and winter visitor to the UK, most often found along the east coast of Britain.

This bumpy shell lives up to its name and lives partly buried in the seabed along the west coast of Great Britain.

This well-camouflaged woodpecker used to be a common breeding bird in Britain, but is now only likely to be seen passing through on migration.

The exotic and beautiful swallowtail is the UK's largest butterfly. A strong flier, residents can be spotted over wetlands in Norfolk during summer. Migrants occasionally appear in southern…

This dainty white butterfly is now only found in a few parts of Britain, where it flutters slowly through woodland clearings.

A scarce tree of central and southern England, in particular, the Small-leaved Lime can be found in ancient woodland. It is has sweet-smelling flowers in summer and nut-like fruits in autumn.