Typical swarm locations
Collectors attend swarms on the roadside elder scrub and coastal vegetation between St Mary's and the Churchill Barrier junction at Holm Sound, in the garden trees and stone wall voids of the older properties along the village street, on the shoreline vegetation and saltmarsh margins of Holm Sound south of the village, and in the farm steading eaves and stone dykes of the Holm parish croft land on either side of the barriers road.