Brush through a wildflower meadow at the height of summer and you'll hear the tiny seeds of yellow-rattle rattling in their brown pods, hence its name.

Look for the wood warbler singing from the canopy of oak woodlands in the north and west of the UK. Green above, it has a distinctive, bright yellow throat and eyestripe.

The Arctic tern is famed for its aggression towards any that would disturb its nest - it will dive-bomb intruders with its sharp beak. Large, noisy colonies can be found on the Farne Islands and…

This long-lived bivalve can be found buried in the sand on the south and west coasts of the UK.

The blackbird of the mountains, ring ouzels can be found breeding on upland moors and rocky crags in summer.

If you spot a crawling shell next time you're at the seaside, take a closer look… it might be a hermit crab!