A large butterfly, which is the most common summer migrant from southern Europe. Annual numbers are highly variable. It does not generally survive the British winter.
Where to look
This species can be seen almost anywhere in Cumbria including gardens, woodland, and scrub. In autumn, it is strongly attracted to rotten fruit. It nectars on thyme, clover and ivy.
When to look
Early to mid-spring for over wintering adults and July to October, generally peaking in late September.