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

This streaky brown bird is a winter visitor, occasionally found walking around the muddy margins of marshes.

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

Nudibranchs, also known as sea slugs, are much like their land-based relatives that you may spot in your garden. But, unlike your regular garden slug, the nudibranch can incorporate the stinging…

The large white is a common garden visitor - look out for its brilliant white wings, tipped with black.

This well-camouflaged wader is a winter visitor to the UK, where it can be seen feeding on wetlands with a distinctive bobbing motion.

This elegant wading bird is a rare visitor to the UK, though occasionally one or two of pairs will nest here.

This glossy wading bird is a scarce visitor to the UK, though records have become more common in recent decades.

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

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