This video is called Astonishing European Butterflies and Moths.
Translated from the Dutch butterfly foundation today:
Most of the butterflies that in recent weeks have been reported to Waarneming.nl and Telmee had wintered as butterflies and have emerged on the first sunny spring days. The brimstone is the most reported species (2000), followed by small tortoiseshell (1700), peacock butterfly (330), red admiral (290) and comma (180).
And now, species which had wintered while in the pupa stage have started emerging as well.