Yn gawr ym myd y crwbanod môr, mae’r crwban môr cefn-lledr yn crwydro’r cefnfor gan chwilio am slefrod môr. Yn wahanol i grwbanod môr eraill, mae’r crwban môr cefn-lledr yn hoffi’r oerni! Mae hyn…

This large green moth rests with its wings spread, so is sometimes mistaken for a butterfly.

The large white is a common garden visitor - look out for its brilliant white wings, tipped with black.

Despite its name, the large blue is a fairly small butterfly, but the largest of our blues. It was declared extinct in 1979, but reintroduced in the 1980s and now survives in southern England.

As its name suggests, the large skipper is bigger than the similar-looking small skipper! It can be seen in summer, resting on the long grass of grasslands, woodlands, verges and sand dunes.

The aromatic fragrance of Large thyme can punctuate a summer walk over a chalk grassland. It is an evergreen that grows low to the ground, with erect spikes of tiny, lilac flowers appearing over…

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