Funding for this research was provided by:
Received: 31 January 2019
Accepted: 3 October 2019
First Online: 22 October 2019
Ethics approval and consent to participate
: Authorization to catch common toads as a control was provided by the regional government of the study area (Regional Environment, Housing and Planning Agency of Sarthe, Mayenne and Ille-et-Vilaine, interprefectoral derogation from the prohibition to capture and transport specimens of protected animal species, 29 May 2017).
: Not applicable.
: The authors declare that they have no competing interests. PC is a scientist in a private company specializing in RFID marking, including wildlife.