Typical swarm locations
Collectors regularly attend swarms in the garden trees and allotment hedgerows of the older terraced streets around Cheapside and Durham Road, along the Wear riverside willows and scrub margins at Croxdale and Low Butterby, on the wildflower grassland margins of the Kirk Merrington and Merrington Lane colliery restoration sites, and in the eaves and chimney stacks of the older colliery-housing terraces.