On 1/07/19 Paul visited Alners Gorse and tells us:
Literally my first purple hairstreak of the year and probably wont get a better view all summer than this one nestled in the grass below the Elm hedge.
Also in the afternoon when the sun finally came out,one of 4 White -letter Hairstreaks nectaring on the bramble.
Paul must have been very pleased as it’s not often you see a Purple Hairstreak with open wings.
Alners Gorse is a great reserve for the four Hairstreaks we can see in Dorset. Green, Purple, White-letter and Brown emerging in that order from May through to August.