Three flight time data sets are available as described in the sections below.
Typical Flight Times, sorted by earliest date
Click on the graphic to see the typical flight times of all UK Butterflies, with the exception of rare migrants and extinct species, sorted by earliest date.
Typical Flight Times, sorted by species and subspecies
Click on the graphic to see the typical flight times of all UK Butterflies, with the exception of rare migrants and extinct species, sorted by species and subspecies.
Earliest Sightings
Click on the graphic to see a summary of the earliest sightings of all UK Butterflies in recent years, with the exception of rare migrants and extinct species.
