Typical swarm locations
Collectors attend swarms in the sheltered garden enclosures and stone-built outbuildings of the village properties around the Walls pier and school, on the gorse and whin scrub of the roadsides and croft margins between Walls and Sandness, in the elder and willow scrub along the burn courses draining the moorland above, and on the heather and rough grassland of the hillsides overlooking Vaila Sound.