This hefty diving bird is a winter visitor to the UK, where it can be seen around the coast or occasionally on large inland lakes.

This well-camouflaged woodpecker used to be a common breeding bird in Britain, but is now only likely to be seen passing through on migration.

Found in compost heaps and under stones in gardens, the flat-backed millipede is a common minibeast. It is an important recycler of nutrients, feeding on decaying matter.

Wedi'i gyfyngu'n bennaf i ogledd y DU, mae’r bele prin yn nosol ac yn anodd iawn ei weld. Fodd bynnag, gellir ei hudo i ymweld â bwrdd adar llawn pysgnau.

Shepherd's purse is often considered a 'weed'. It produces a lot of seeds and can be found on cultivated and disturbed land, such as arable fields, tracks and gardens.

The grey partridge is an attractive bird that prefers the ground to pear trees! Found on farmland and grassland, it is under threat from loss of habitat.

The Common walnut tree produces a large, brown nut that is familiar to so many of us. It is an introduced species in the UK, and can be seen in towns, gardens and parks.

Ground-elder was likely introduced into the UK by the Romans and has since become naturalised. A medium-sized umbellifer, it is an invasive weed of shady places, gardens and roadsides.

The chestnut-brown bank vole is our smallest vole and can be found in hedgerows, woodlands, parks and gardens. It is ideal prey for owls, weasels and kestrels.