This small duck is an uncommon winter visitor to the UK, where they're usually found on lakes, reservoirs and gravel pits.

Look for the small, pink, pea-shaped flowers of Common restharrow on chalk and limestone grasslands, and in coastal areas, during summer.

Enchanter's nightshade is a hairy plant, with rounded leaves that taper to a fine tip, and clusters of small, pinky-white flowers in summer.

A small colourful sea slug that can be found grazing on sea mats on the rocky shore and beyond the low water mark.

Herb-robert is a low-growing plant, with small, pretty, pink flowers. Look for it in shady spots in woodland, hedgerows and coastal areas.

As the name suggests, this beautiful brown butterfly is most common in Scotland, though it can also be seen in northern England.

Look out for the small, yellow flowers of Celery-leaved buttercup in wet meadows and at the edges of ponds and ditches. It flowers from May to September.

Known as the phantom of the forest, goshawks can fly through the trees at up to 40km per hour as they hunt birds and small mammals.

A small, tufted fern, maidenhair spleenwort can be found growing out of crevices between rocks, in walls and on mossy branches across the UK.

Considered Britain's most threatened butterfly, the high brown fritillary can be only be found in a few areas of England and Wales.

This dainty white butterfly is now only found in a few parts of Britain, where it flutters slowly through woodland clearings.