Often confused with the larger but similarly shaped lion’s mane jellyfish, the blue jellyfish can be colourless when young and develop a striking blue-purple bell as it matures.

This streaky brown bird is a summer visitor to Britain, favouring open woodlands in the north and west.

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.

The once-common pochard is now under threat because its populations are declining rapidly. The UK is an important winter destination for the pochard, with 48,000 birds visiting our wetlands and…

This dashing diving duck is a winter visitor to the UK's seas, coastal lakes and occasionally inland water bodies.

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.