Typical swarm locations
Collectors frequently attend swarms in the parkland lime avenues and ornamental stone walls of Blenheim Palace and its pleasure grounds, in the garden trees and old stone-walled properties of the Market Street and Park Street conservation area, in the Glyme valley willows and alders between Woodstock and Long Hanborough, in the walled kitchen garden and home farm buildings of the palace estate, and in the mature sycamore of the outlying villages of Bladon and Combe.