The black darter is a black, narrow-bodied dragonfly that can be seen throughout summer and autumn. It is hovers around damp moors, heaths and bogs, darting out to surprise its prey.

Found in ponds and marshes, the fragile look of the common water-measurer belies its fierce nature. A predator of small insects, it uses the vibrations of the water's surface to locate its…

Famously predatory, the long, slender pike will lurk among the vegetation of a river or lake, bursting out with ferocious speed to catch its prey. Look out for it across the UK.

The fearsome common backswimmer hunts insects, tadpoles and fish. It uses its oar-like legs to swim upside-down under the water's surface where unsuspecting prey can be found.

With black-and-yellow markings, the hornet robberfly looks like its namesake, but is harmless to us. This mimicry helps to protect it from predators while it perches in the open, waiting for its…

The melodious song of the nightingale is the most likely sign of this bird being about. Shy and secretive, it sings from dense scrub and woodland, day and night.

The gudgeon is a bottom-dwelling fish, similar to the stone loach, but with only two whisker-like barbels near its mouth. These sensory organs help it to find its prey in the sand and gravel of…