Typical swarm locations
Holderness-plain oilseed rape field margins on the Lelley Road and Burton Constable approach produce strong prime swarms from late April. Hawthorn and elder on the old Holderness lane field-boundary hedgerows are a reliable spring swarm site through May. St Peter's church churchyard lime and elder at Bilton village is a well-noted local swarm site in June. Older brick-built farm outbuildings and chimney stacks on the village main lane are the most common cavity swarm locations.