Field elm suffered declines due to the devastating effects of Dutch elm disease, but can still be found across much of the UK.

The herring gull is the typical 'seagull' of our seaside resorts, though our coastal populations have declined in recent decades.

False widow spiders are often the subject of unflattering headlines, but in reality they're unlikely to bite humans.

The stately grass-of-parnassus displays pretty, white flowers with green stripes. Once widespread, it is now declining as its wetland habitats are disappearing.

Native oysters are a staple of our seas and our plates - but our love of their taste has lead to a sharp decline all around the UK.

Unlike many of its relatives, this shimmering shieldbug is a predator, feasting on caterpillars and a variety of other insects.

The dazzling silver-studded blue is a rare butterfly of heathland habitats, mainly in southern England. It has undergone severe population declines in recent years.

The speckled bush-cricket, as its name suggests, is covered in tiny, black speckles. It can be found in scrub, hedgerows and gardens throughout summer. Males rub their wings together to create a…