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adult Rhinolophus ferrumequinum, infant bat, development ultrasound calls
M. M. Andrews, T. P. MCowat, P. T. Andrews, R. J. Haycock (2011). The Development of the Ultrasound Social Calls of Adult Rhinolophus ferrumequinum From Infant Bat Ultrasound Calls. Bioacoustics 20(3): 297-316