Typical swarm locations
Collectors in Burwell regularly attend swarms in the waterside willows and fen-edge scrub of Burwell Lode and the Wicken Fen perimeter dykes, in the old garden fruit trees and orchard remnants of the High Street and North Street conservation area, in the chalk downland hedgerows on the rising ground towards Swaffham Prior, and in chimney stacks and eaves of older fenland farmhouses and cottages.