According to my books this could be Berger's clouded yellow-Colius australis- which has
recently been described as a completely separate species. found throughout Europe it may well be a resident species.
This species is a migrant species to the Netherlands (resident in southern Europe), so it depends how many individuals are seen from year to year. 2013 was a very successful year for this species and many have been seen in NL (they were also very abundant in Bulgaria and the Pyrenees).
According to my books this could be Berger's clouded yellow-Colius australis- which has
recently been described as a completely separate species. found throughout Europe it may well be a resident species.
Colias australis (or C. alfacariensis) is a species that can be found in large parts of southern and central europe, but certainly not in the Netherlands, with only 9 confirmed sightings in the 20th century this is a very rare vagrant here....
