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

Mae’n bur debyg eich bod chi wedi gweld llawer o wiwerod – ond ydych chi wedi gweld un goch? Mae gwiwerod coch yn frodorol i’r DU ond yn llawer prinnach na’u cefndryd llwyd! Maen nhw’n byw mewn…

This metallic green beetle can be seen visiting flowers on sunny days in spring and summer.

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

The sinuous otter is an excellent swimmer and can be seen hunting in wetlands, rivers and along the coast - try the west coast of Scotland, West Wales, the West Country or East Anglia for the best…

This brightly-coloured beetle is often found feeding on flowers on warm days in late spring and summer.

A common moth across most of the UK. The large, hairy caterpillars are often seen in late summer.

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

This huge gull can be seen around most of the UK's coasts in summer, with some venturing inland in winter.

Mae môr-gyllyll yn perthyn i ystifflogod ac octopysau – grŵp o folysgiaid sy’n cael eu hadnabod fel seffalopodau. Efallai eich bod chi wedi gweld y gragen fewnol sialcog, o’r enw asgwrn cyllell,…