Tawny owls are the familiar brown owls of Britain’s woodlands, parks and gardens. They are known for their ‘too-wit too-woo’ song that can be heard at night-time.

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…

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

The house sparrow is a familiar, streaky brown bird of towns, parks and gardens. Males sport a grey cap and black bib, the size of which indicates their status.

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

Mudwr sy’n teithio'n dda ac mae'r fantell dramor yn cyrraedd yma bob haf o Ewrop ac Affrica. Mae'r glöyn byw oren a du hardd yma’n ymweld â gerddi yn rheolaidd.

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

The dark bush-cricket, as its name suggests, is dark brown or reddish. It can be found in woodlands, hedgerows and gardens throughout summer. Its irregular chirpings are a familiar sound of summer…

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

This impressive beetle digs burrows, lays thousands of eggs and has bee-riding larvae.