Bats are a vital part of our native wildlife, accounting for almost a third of all mammal species in the UK and occupy a wide range of habitats, such as wetlands, woodlands, farmland, as well as urban areas. They can tell us a lot about the state of the environment, as they are top predators of common nocturnal insects and are sensitive to changes in land use practices. The pressures they face - such as landscape change, agricultural intensification, development, and habitat fragmentation are also relevant to many other wildlife species, making them excellent indicators for the wider health of the UK's wildlife.