The defensive mechanism of the pill woodlouse is very recognisable - it curls itself into a tight ball, only showing its plated armour to its attacker. It is an important recycler of nutrients,…

The brown, oval flower heads of ribwort plantain balance on top of thin, wiry stems; the resulting seed heads provide food for birds in winter. Look for this 'weed' in lawns, fields and…

A pretty and distinctive little waterbird, the mandarin duck was introduced from the Far East as its name suggests. Oddly for a duck, it nests in trees, sometimes high above the water.

The small blue's name is a little misleading: it is our smallest butterfly, but only shows a dusting of blue on brown wings. It is scarce, occurring on chalk grassland, mostly in southern…

Kissing under the mistletoe is a much-loved Christmas tradition, making this plant familiar to us all. It actually grows as a parasite on trees - look for it hanging off branches in large balls…

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.

Our most well-known amphibian, the common frog is a regular visitor to garden ponds across the country, where they feast on slugs and snails. In winter, they hibernate in pond mud or under log…

A medium-sized diving duck, the goldeneye can mainly be spotted in winter when birds fly in from Northern Europe. Conservation efforts have helped small numbers of these birds to nest in Scotland…

Like many of our farmland birds, the yellowhammer has declined in number in recent years. Spot this bright yellow bird singing from the top of a bush or fence, or in a mixed-species flock in…

The oak marble gall wasp produces brown, marble-shaped growths, or 'galls', on oak twigs. Inside the gall, the larvae of the wasp feed on the host tissues, but cause little damage.

The red-throated diver lives up to its name - the distinctive red patch on its throat heralds the breeding season. In summer, it nests in Scotland, but look out for it around the UK's coast…

Shag' is a very old name that means 'tufted' and refers to the small crest that this bird sports. Look out for it in spring and summer either diving for fish from the surface of the…