Ragged winged butterfly at Portbury Wharf Nature Reserve

Ragged winged butterfly at Portbury Wharf Nature Reserve

Observation - Ragged winged butterfly at Portbury Wharf Nature Reserve - UK and Ireland. Description: It looks rather damaged presumably that isn't the normal wing-shape? (And presumably it is a butterfly not a moth?)

It looks rather damaged presumably that isn't the normal wing-shape? (And presumably it is a butterfly not a moth?)