The rare Adonis blue can be spotted on sunny chalk grasslands throughout summer. Males are a dazzling sky-blue in colour, while females are duller brown.

This beautiful orange and brown butterfly is now a rare sight in the UK

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…

This streaky brown bird is a summer visitor to Britain, favouring open woodlands in the north and west.

The small, brown Dartford warbler is most easily spotted when warbling its scratchy song from the top of a gorse stem. It lives on lowland heathland in the south of England, where it nests on the…

Yn gwibio o gwmpas y tŷ yn yr haf, mae'r copyn heglog, brown yn gyfarwydd i lawer ohonom. Mae’n ffynhonnell fwyd werthfawr i lawer o adar.

This streaky brown bird is a winter visitor, occasionally found walking around the muddy margins of marshes.

This brown seaweed lives in the lower shore and gets its name from the serrated edges to its fronds.

As the name suggests, this beautiful brown butterfly is most common in Scotland, though it can also be seen in northern England.

Like many of our farmland birds, the corn bunting has declined in number in recent years. Spot this streaky brown, thick-billed bird singing from a wire or post - it sounds just like a set of…

This stocky, brown mammal spends its life burrowing underground with its spade-like paws, hunting for earthworms to eat.