An attractive, olive-green bird, the greenfinch regularly visits birdtables and feeders in gardens. Look for a bright flash of yellow on its wings as it flies.

Often spotted in large flocks, the fieldfare is an attractive thrush. It is a winter visitor, enjoying the feast of seasonal berries the UK's hedgerows, woodlands and parks have to offer.

The tiny firecrest vies with the goldcrest for the title of the UK's smallest bird. Once just a visitor, the firecrest can now be found breeding in woodlands in the south of England.

With its familiar features, the Field pansy is a delicate version of a garden favourite. Usually creamy-yellow in colour, it can be seen in fields and on roadside verges and waste ground.

The song thrush is a familiar garden visitor that has a beautiful and loud song. The broken shells of their blue, spotty eggs can often be found under a hedge in spring.

A well-travelled migrant, the painted lady arrives here every summer from Europe and Africa. This beautiful orange-and-black butterfly regularly visits gardens.

The pied flycatcher is a summer visitor, migrating here from West Africa to breed. Look for this small, black-and-white bird in woodland, parks and gardens, mostly in the west of the UK.

The river lamprey is a primitive, jawless fish, with a round, sucker-mouth which it uses to attach to other fish to feed from them. Adults live in the sea and return to freshwater to spawn.

When spotting the pintail in winter, look out for the fabulous, long tail feathers that characterise it. This dabbling duck feeds at the water's surface, rather than diving for food.