Typical swarm locations
Collectors regularly attend swarms in the mature garden trees and churchyard limes of the Market Place and Church Street conservation area, along the King's Dyke and Nene Washes drain-bank scrub and willow carr, on the Holme Fen and Flag Fen wetland margins towards Peterborough, and in the chimney stacks and eaves of the older brick and tile cottages of the fen lanes north of the town.