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.

The white-letter hairstreak gets its name from the white lines that form a 'W' shape on its underside. It is an elusive butterfly, spending much of its time in the treetops.

The Bechstein's bat is a very rare bat that lives in woodland and roosts in old woodpecker holes or tree crevices. Like other bats, the females form 'maternity colonies' to have…

Nudibranchs, also known as sea slugs, are much like their land-based relatives that you may spot in your garden. But, unlike your regular garden slug, the nudibranch can incorporate the stinging…

A scarce and declining bird, the tree sparrow can be spotted on farmland and in woodlands; it is not an urban bird in the UK. It has a brown cap and black cheek-spots, unlike the similar house…

The 14-spot ladybird is one of three yellow ladybirds in the UK. Look for it in grassland, woodland and gardens. Ladybirds are beneficial insects, managing garden pests - encourage them by putting…

The 22-spot ladybird is one of three yellow ladybirds in the UK. Look for it in grassland, woodland and gardens. Ladybirds are beneficial insects, managing garden pests - encourage them by putting…

Our most common ladybird, the black-on-red markings of the 2-spot Ladybird are familiar to many of us. Ladybirds are beneficial insects, managing garden pests - encourage them by putting up a bug…

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