Look out for the white, umbrella-like flower heads of lesser water-parsnip along the shallow margins of ditches, ponds, lakes and rivers. When crushed, it does, indeed, smell like parsnip!

So-named because its gnarled trunk can split as it grows, the Crack willow can be seen along riverbanks, around lakes and in wet woodlands. Like other willows, it produces catkins in spring.

The streamlined goosander is a handsome bird and a great fisher - its long, serrated bill helps it to catch and hold its slippery fish prey. It nests in riverbank trees, but can be seen on lakes…

The hart's-tongue fern is a hardy fern of damp, shady places in woodlands. It also makes a good garden fern. It has simple, tongue-shaped, glossy, green leaves that have orange spores on…

Herb-Paris has four oval leaves set in a cross, with an understated crown of yellow-green flowers rising from the middle. This makes it quite a distinctive plant of ancient and damp woodlands on…

A common dragonfly of ponds, lakes and canals near woodland, the Southern Hawker can be seen patrolling the water or 'hawking' through woodland rides. A fast-flying species, it will…

Look out for the feathery leaves of Spiked water-milfoil just below the surface of streams, ditches, lakes and ponds; its red flowers emerge from the water in summer. It provides shelter for a…

Look out for the swallow performing great aerial feats as it catches its insect-prey on the wing. You may also see it perching on a wire, or roosting in a reedbed, as it makes its way back to…

The water stick insect looks just like a mantis. An underwater predator, it uses its front legs to catch its prey. Its tail acts as a kind of 'snorkel', so it can breathe in the water.…

This small summer migrant travels from Africa to breed in the reedbeds of the UK. Rarely seen but given away by its insect like trilling call; the movement of the head during calling makes it…