Typical swarm locations
Collectors attend swarms on the garden walls and chimney pots of the terraced streets around Plas-y-coed Road and Brynhyfryd Road, along the Sirhowy River bank and its alder, willow and bramble margins, in the bramble and willowherb scrub on the former Pochin Colliery reclamation ground, in the school grounds hedgerow boundaries, and in the bilberry and hawthorn scrub on the Mynydd Islwyn slopes above the town.