Typical swarm locations
Collectors cover swarms in the mature lime and horse chestnut trees of People's Park and Savile Park, along the Rochdale Canal towpath willows and elder scrub between Luddendenfoot and Mytholmroyd, on the heather and bilberry moorland margins of Midgley Moor and Warley Moor, and in the chimney stacks and eaves of the older stone mill terraces along the Calder valley floor.