I will never malign curly dock again! Surprisingly, this invasive weed is the common host plant for this remarkably large copper. This butterfly is easy to spot with its bright chalky white. And the topside isn't exactly copper, but more of a moth brown. In flight, I mainly see the flash of white, because the brown just looks like shadow. I believe this is a boy staking his claim to this perch of curly dock, because he repeatedly came back to this exact spot after chasing flirty wings.