The colourful and delightful chaffinch is a regular garden visitor across the UK. Look out for it hopping about on the ground under birdtables and hedges.

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

The bright green ring-necked parakeet is an escapee and our only naturalised parrot; its success is likely due to warmer winters.

A small, tufted fern, maidenhair spleenwort can be found growing out of crevices between rocks, in walls and on mossy branches across the UK.

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

Red squirrels are native to the UK but are a lot rarer than their grey cousins. They live in a few special places across the UK thanks to reintroduction projects.