Whilst a number of core BTO surveys encourage volunteers to capture data on non-avian taxa, recent field projects have also sampled other groups, often integrated with surveys of birds, to provide a greater understanding of the environment. This has included research on urban moth, butterfly and bat populations, fieldwork on the abundance of many different taxa on farmland, the development of passive sound-recording to monitor bats, bush crickest, birds and small mammals, and a wide range of research studies looking across taxa at a variety of issues, from climate change to conservation effectiveness.
