Colias crocea are the most widespread of the Colias species found throughout Europe. Breeding ranges from North Africa and South Europe, extending Eastwards through Turkey into the Middle East. Some years In favourable weather conditions, they can migrate as far North to Southern Finland. It is only a permanent resident in the warm Mediterranean region as the larvae are not able to survive throughout the year north of the Alps. This species is famous for the occasional mass migrations into the United Kingdom.
