Common Wood-nymph

Cercyonis pegala

The common wood-nymph is a North American species of butterfly in the family Nymphalidae. It is also known as the wood-nymph, grayling, blue-eyed grayling, and the goggle eye. Source

Where it is now

In the last 8 weeks this insect was recorded 4 times across 1 area (each area is a 5 degree square).

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Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.