Typical swarm locations
Halstead collectors attend swarms in the riverside alder and willow of the Colne valley parks and mill pond margins, in the walled garden and old orchard boundaries of the older properties on Head Street and Trinity Road, along the hedgerow-dense field margin footpaths of the lanes towards Earls Colne and Sible Hedingham, and in the chimney pots and Essex weatherboard and pargeted-plaster cottage roof voids of the town conservation area.