The ptarmigan is a master of disguise - matching its Highland surroundings perfectly by turning snow-white in winter and rock-grey in summer. It is confined to the mountains of Scotland, so is…

This unmistakeable moth, famous for its skull-shaped marking, is a rare visitor to the UK.

The stoat is a small mustelid, related to the weasel and otter. It has an orange body, black-tipped tail and distinctive bounding gait. Spot it on grassland, heaths and in woodlands across the UK…

The petals of the rare Lizard orchid's flowers form the head, legs and long tail of a lizard. They are greenish, with light pink spots and stripes, and smell strongly of goats! Spot this tall…

The small, yellow flowers and woolly appearance of kidney vetch make this plant easy to spot. Look for it growing low to the ground on sand dunes, chalk grasslands and cliffs in summer.

Known in America as the 'Eared Grebe' because of its golden ear tufts, the black-necked grebe is a rare nesting bird in the UK. It is easiest to spot around southern coasts in winter.…

The harvest mouse is tiny - an adult can weigh as little as a 2p piece! It prefers habitats with long grass, but you are most likely to spot its round, woven-grass nests.

Sometimes called 'Marsh samphire', wild common glasswort is often gathered and eaten. It grows on saltmarshes and beaches, sometimes forming big, green, fleshy carpets.

Despite its name, Ground-ivy is actually a member of the dead-nettle family. It is a clump-forming, aromatic plant that likes woodlands, hedgerows and damp places.

The distinctive spiky, or 'bearded', green flower heads of wall barley appear from June to July and are easy to spot in an urban environment as they push their way up through pavements…

Plaice is a common sight all around our coasts - if you can spot it! They are extremely well camouflaged against the seabed and can even change colour to better match their surroundings.