Immigrants from the Continent actlng oddly

Immigrants from the Continent actlng oddly

Observation - Immigrants from the Continent actlng oddly - UK and Ireland. Description: At least 6 of these moths flying low over bare earth, and settling on it. There seemed some competition between them for certain spots. Any ideas about why they were so keen on this area and ignoring the flowers (lots of Red Valerian) would be welcome

At least 6 of these moths flying low over bare earth, and settling on it. There seemed some competition between them for certain spots.

Any ideas about why they were so keen on this area and ignoring the flowers (lots of Red Valerian) would be welcome?