Typical swarm locations
Collectors attend swarms in the older garden remnants and lime trees of the Market Place and Long Row conservation areas, on the gritstone heather and bilberry margins of the Chevin above Farnah Green, along the Derwent riverside willows and watermeadow margins at Belper River Gardens and Milford, and in the chimney stacks and eaves of the older mill-workers' terraces and stone-built Victorian town-centre properties.