All UK bat species are legally protected, but roost disturbance, pesticide impacts on insect prey, and collision mortality create ongoing welfare challenges for these ecologically vital mammals.
Roost disturbance during building work causes acute stress to roosting bats and may separate pups from mothers, causing abandonment and starvation. Timber treatment chemicals in roosts can cause chronic toxic exposure. Pesticide reduction of insect populations forces bats to travel further to find food, increasing energy expenditure and stress during critical periods. Cat predation of bats emerging from roosts causes direct injury and death. Wind turbine collision kills bats — particularly migratory species — at significant scale. Bat rehabilitation involves highly invasive care that, while welfare-motivated, causes significant short-term stress to wild animals.