Typical swarm locations
Canford Heath heather and gorse scrub on the reserve edges is a known gathering site for prime swarms in late May and June. The Poole Harbour shore sea-lavender and coastal scrub along the Baiter Park and Whitecliff Bay margins also attracts clusters. Old Town Conservation Area chimney stacks and roof eaves are regularly reported, as are willows and hawthorn on the harbour edge at Baiter Park.