Typical swarm locations
Collectors regularly attend swarms in the older garden and orchard remnants of the Causeway and London Road conservation areas, along the Avon riverside willows and alders at Pewsham and Chippenham Marsh, on the limestone grassland and scrub margins of the Colerne plateau lanes, and in the chimney stacks and eaves of the older market-town properties of the High Street and St Mary Street areas.