Typical swarm locations
Collectors in Sawston regularly attend swarms in the riverine willows and watermeadow margins of the Granta at Dernford Mill, in the older garden fruit trees and hawthorn hedgerows of the Mill Lane and High Street conservation area, in the chalk downland hedge banks on the escarpment fringe towards Babraham and Hildersham, and in chimney stacks and roof voids of the older village and inter-war properties.