Typical swarm locations
Local collectors attend swarms in the lime and sycamore trees of Gawthorpe Hall park and the St Leonard's churchyard, in the older chimney stacks and mill building roof voids along the river corridor and Burnley Road, along the hawthorn and elder banks of the River Calder and Sabden Brook footpaths, and in the garden trees and stone-wall crevices of the residential streets above Station Road.