Typical swarm locations
Laira estuary shore coastal scrub and hawthorn on the tidal margin are spring swarm sites visible from the Embankment Road. Efford Down gorse scrub and hawthorn hedge at the fort embankment attract clusters in late April and May. Post-war estate sycamore and elder on Efford Road and Torridge Way garden boundaries produce swarms through June. Older cottage chimney stacks in the Lipson and Efford lane remnants are the most commonly reported cavity swarm locations.