Coenonympha pamphilus is a common resident. However, the species had a bad year in 1992; numbers fell dramatically to just a tenth of those of the previous year. The Dutch Monitoring Scheme has since recorded a slight increase in numbers, as well as the recolonisation of several areas. At present, C. pamphilus is as common as it was in 1991. It is a species of open, nutrient-poor grasslands, dunes, roadside verges, gardens and neglected corners of fields, preferring a vegetation with a mosaic structure. It flies in two generations, the first from the end of May until mid-July. Fast-growing caterpillars of the first generation give rise to butterflies that fly as a second generation from the beginning of August until the beginning of September.
Wynhoff, I., Groenendijk, D., Swaay, C. van, Bosveld, M., Bos, F.
- Bos, F., M. Bosveld, D. Groenendijk, C. van Swaay & I. Wynhoff 2006. De dagvlinders van Nederland, verspreiding en bescherming. Nederlandse Fauna 7. De Vlinderstichting, Wageningen en Nationaal Natuurhistorisch Museum Naturalis, European Invertebrate Survey, Nederland.