Surveying for bat roosts in trees is a challenging task. To improve the efficacy of such surveys we are currently researching whether technology can be used to improve results – see ‘Improving the prospects for two tree-dwelling bat species’. In this article for the Arboricultural Association’s magazine, we share what we have been up to and some preliminary results. People’s Trust for Endangered Species & Arboricultural Association and supported by STIHL Want to learn more about how to create bat roosts in living trees? See our training courses for arborists available on our short courses page.