Typical swarm locations
Swarms settle on the churchyard sycamore and ash, in the stone-walled farm gardens of the South Tyne valley, along the river-bank alder and willow carr, and on the Hadrian's Wall gorse and heather scrub on the exposed Whin Sill ridge. Collectors here cover the South Tyne valley, the Haltwhistle Burn and the Northumberland National Park fringe.