The Chalkhill Blue is a butterfly which gives us some concern in Dorset, where its range seems to have decreased, especially in some areas. We need help to check places where it has been previously seen.
Our latest atlas shows the distribution trends for the Chalkhill indicate a decline of 18% in the number of kilometre squares where this species is found over the last 15 years, and a decline of 47% over the last five years.
We need people to visit places where this butterfly has been seen in the past, to see if it is still there (and, very importantly, to tell us if it is not seen). Our Records Officer, Robin George, has written up the details of the problem and what is needed, in “Chalkhill Search 2021”
Details about identifying the butterfly can be seen on its species page.