Department of Computer Science, University College London, London, United Kingdom.|Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, United Kingdom.|Bat Conservation Trust, Quadrant House, London, United Kingdom.|Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, United Kingdom.|Department of Computer Science, University College London, London, United Kingdom.|Institute of Zoology, Zoological Society of London, Regents Park, London, United Kingdom.|Bellevue, Washington, United States of America.|Department of Computer Science, University College London, London, United Kingdom.|Wickford, Essex, United Kingdom.|British Trust for Ornithology, The Nunnery, Thetford, Norfolk, United Kingdom.|Institute of Biodiversity and Ecosystem Research, Bulgaria Academy of Sciences, Sofia, Bulgaria.|School of Earth, Environmental and Biological Sciences, Queensland University of Technology (QUT), Brisbane, QLD, Australia.|Ridgeway Ecology, Warwick, United Kingdom.|Romanian Bat Protection Association, Satu Mare, Romania.|Romanian Bat Protection Association, Satu Mare, Romania.|Green Balkans-Stara Zagora, Stara Zagora, Bulgaria.|Department of Mathematics, Imperial College London, London, United Kingdom.|Department of Computer Science, University College London, London, United Kingdom.|Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, United Kingdom.