Typical swarm locations
Collectors regularly attend swarms in the mature garden and parkland trees around Victoria Park and Greenhead Park, along the Aire and Worth riverside willows and elder scrub at Damems and Utley, on the heather and bilberry moorland margins of Rombalds Moor and East Morton moor above the town, and in the chimney stacks and eaves of the older stone mill terraces of the Worth and Aire valley floors.