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.

This snowy white moth is easily mistaken for the similar brown-tail, until it lifts its abdomen to reveal a burst of golden-yellow.

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

This bog-loving butterfly is mostly found in the north of the UK, where it takes to the wing in summer.