The Migrant Watch survey has now been running for 10 years, 2008-2017. Over that time 58,811 reports of Painted Lady (Vanessa cardui) and Humming-bird Hawk-moth (Macroglossum stellatarum) have been reported through the website. Surprisingly, Humming-bird Hawk-moth records (35,248 reports in total) considerably outnumber those of Painted Lady butterflies (23,563 reports). Indeed, in seven of the 10 years, there have been more reports of the moth than of the butterfly, and only in the amazing Painted Lady year of 2009 did butterfly sightings greatly outnumber those of Humming-bird Hawk-moth. More than half (54%) of all the Painted Lady reports ever submitted to Migrant Watch came in 2009!
Click on the link to read the rest of the article: Butterfly Conservation – Results of 2017 Survey