The whooper swan is a very rare breeding bird in the UK, but has much larger populations that spend winter here after a long journey from Iceland. It has more yellow on its yellow-and-black bill…

Arrowhead is an aquatic plant of shallow water and slow-moving waterways. In bloom over summer, it displays small, white flowers, but it is the arrow-shaped leaves that are most distinctive.

Curled dock is often considered a 'weed'. It can be found near water or on disturbed ground almost anywhere. It is similar to Broad-leaved dock, with which it can hybridise.

This brown seaweed lives high up on rocky shores, just below the high water mark. Its blades are usually twisted, giving it the name Spiral Wrack.

The chocolate-brown, plump dipper can often be seen bobbing up and down on a stone in a fast-flowing river. It feeds on underwater insects by walking straight into, and under, the water.

Broad-leaved dock is well-known to most of us as the remedy for Stinging nettle irritations. Often considered a 'weed', it can be found next to water or on disturbed ground almost…

A pretty and distinctive little waterbird, the mandarin duck was introduced from the Far East as its name suggests. Oddly for a duck, it nests in trees, sometimes high above the water.

Unsurprisingly, the nocturnal long-eared owl sports large 'ear tufts' on its head, while the short-eared owl has much smaller ear tufts. A shy bird, it is best spotted around the coast…

A common dragonfly of canals, marshes, reedbeds and lakes, the brown hawker can be seen patrolling the water or 'hawking' through woodland rides. It is easily distinguished by its…