Fig. 1
From: Automatic detection of small PIT-tagged animals using wildlife crossings
Design of the experimental system. a A schematic view of the tunnel below the road. b Implementation of the RFID detection device (four antennas and a control unit, or ‘reader’) positioned along the tunnel for toads. The animals were released at the entrance of the tunnel. c Implementation of the RFID detection device (four antennas and a control unit, or ‘reader’) positioned along the tunnel for ground beetles. The animals were released at the entrance of the tunnel