The Leisler's bat flies fast and high near the treetops, but you might also spot it flying around lamp posts, looking for insects attracted to the light.

The delicate, tube-like, violet-blue flowers of Skullcap bloom from June to September in damp places, such as marshes, fens, riverbanks and pond margins.

The rose-red breast, large black cap and thick bill make the bullfinch easy to identify. A plump-looking bird of woodlands, hedgerows and orchards, it also frequents gardens.

The sparrowhawk is a small bird of prey that can be found in all kinds of habitats and often visits gardens looking for its prey - small birds like finches, tits and sparrows.

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.

A low-growing plant of sand dunes, heaths and grassy places, Common centaury is in bloom over summer. Look for clusters of pretty, pink, five-petalled flowers.

Traditionally a coastal species, Lesser sea-spurrey has spread inland, taking advantage of the winter-salting of our roads. Its pink-and-white flowers bloom in summer.

Water-plantain is an aquatic plant of shallow water and muddy banks. In bloom over summer, it displays tall branches of loosely clustered, pale lilac flowers.