Typical swarm locations
Collectors attend swarms on the field-margin hawthorn hedgerows of the Hatfield Chase plain, on the eaves and chimney pots of the older Armthorpe village streets around Church Street and New Street, in the mature garden sycamores and elder of the residential areas off Tranmoor Lane, and in the scrub and willowherb margins of the Markham Main colliery reclamation land to the west.