Bat Diversity and Welfare
Britain hosts 18 species of bat, ranging from the common pipistrelle (weighing 3-8g) to the greater horseshoe bat with a wingspan of 40cm. All are legally protected, all are insectivorous, and all face threats from habitat loss, roost disturbance, and insect decline. Understanding the diversity of British bats enables better welfare and conservation outcomes.
Species Diversity
Common and soprano pipistrelles: Britain's most abundant bats, roosting in building roof spaces, bat boxes, and crevices. Often the species seen hunting insects around street lights and over garden ponds at dusk. Echolocating at different frequencies (45 kHz common pipistrelle; 55 kHz soprano pipistrelle) — distinguishable with bat detectors.
Brown long-eared bat: Large ears (nearly as long as body) enable prey detection by passive hearing as well as echolocation. Often hunts insects by gleaning from foliage in woodland. Roosts in roof spaces of older buildings — particularly vulnerable to roof renovation works.
Greater and lesser horseshoe bats: Rare, restricted to south-west England and Wales. Require large, undisturbed roost sites and landscape connectivity. Both UK BAP Priority Species.
Noctule, serotine, Daubenton's, Natterer's, whiskered/Brandt's: Species occupying varied habitats from open countryside to riverine environments, woodland interiors, and lowland farmland.
Legal Protection
All British bats and their roosts are fully protected under the Wildlife and Countryside Act 1981 and the Conservation of Habitats and Species Regulations 2017. It is illegal to intentionally kill, injure, or disturb bats, or to damage, destroy, or obstruct access to their roosts — even when bats are not present. Building work affecting bat roosts requires ecological survey and, if impacts are unavoidable, a European Protected Species licence.
Supporting Bats
Gardens: bat boxes provide additional roost sites; pesticide-free gardening increases insect prey availability; ponds attract Daubenton's bats and provide drinking water; night-scented flowers attract moth prey. Light pollution reduction (avoiding pointing lights toward roost sites) reduces roost disturbance. Mature trees (particularly those with crevices and loose bark) provide roost opportunities — retention is important in planning decisions.
Injured Bats
Found a grounded bat? Handle with thick gloves (bats can carry European Bat Lyssavirus — a rabies-related virus — so do not handle with bare skin). Contact the Bat Conservation Trust helpline (0345 1300 228) for advice on nearest licensed bat carer. Most grounded bats are ill or injured and require specialist care — release without treatment reduces survival chances.