Beavers are the engineers of the animal world, creating wetlands where wildlife can thrive. After a 400-year absence, beavers are back in Britain!

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.

Sand eels are a hugely important part of our marine ecosystem. In fact, the fledgling success of our breeding seabirds entirely depends on them.

The common rosefinch is a rare visitor to the UK, usually passing through in autumn.

This wading bird is mainly a visitor on its spring and autumn migration, though a small number nest in Scotland.

This elegant wader is an uncommon autumn visitor, often joining flocks of dunlin.

The grey squirrel was introduced into the UK in the 1800s. It provides an easy encounter with wildlife for many people, but can be damaging to woodlands and has contributed to the decline of the…

One of the prettiest hardy ferns, the lady fern is delicate and lacy, with ladder-like foliage. It makes a good garden fern, providing attractive cover for wildlife.