Bats

Work conducted

Bat surveys of buildings, bridges, tunnels and trees. Emergence, dawn swarming & flightline surveys using time expansion and frequency division bat detectors, both static and hand-held, and sound analysis software. Assisting clients to obtain Natural England and National Assembly for Wales licences, supervising demolition activities under licence, advising on bat mitigation & mitigation design including construction of replacement roosts and bat houses, installation of heaters and heated bat boxes & monitoring post completion.

The following works have recently been carried out, under licence where necessary:

• Survey, monitoring and mitigation for an established serotine bat maternity roost in Somerset including advice on design of new roofs and heated bat boxes.

• All-night transect surveys in relation to a proposed wind farm in Somerset.

• Endoscope and emergence surveys of motorway bridges in relation to the widening of the M1 motorway.

• Successful incorporation of a lesser horseshoe bat roost into a barn conversion near Bristol.

• Seasonal surveys of disused railway tunnels in the Wye Valley in relation to the development of a cycle path.

Bat biology and general information

Legislation and bats