This small, white heron is an increasingly common sight in parts of the UK as it spreads north from continental Europe.

This small, round sea urchin is (unsurprisingly!) green in colour and can be found on rocky shores around the UK.

Despite its dazzling colouration, this fabulous nudibranch can be easily missed, due to its small size!

This wading bird is mainly a visitor on its spring and autumn migration, though a small number nest in Scotland.

The bill-shaped seed pods of Common Stork's-bill explode when ripe, sending the seeds flying! This low-growing plant has pretty pink flowers and can be seen on grasslands and coastal sands.…

This large shrike visits the UK in small numbers each year, passing through on migration or spending the winter here.

This small finch nests on moorlands and coastal crofts, spending the winter on the coast. The UK population has declined dramatically.

As the name suggests, this beautiful brown butterfly is most common in Scotland, though it can also be seen in northern England.

This small duck is an uncommon winter visitor to the UK, where they're usually found on lakes, reservoirs and gravel pits.