Losdat, Sylvain http://orcid.org/0000-0001-7673-4877
Helfenstein, Fabrice
Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Article History
Received: 10 October 2017
Revised: 23 January 2018
Accepted: 6 February 2018
First Online: 9 March 2018
Compliance with ethical standards
:
: The authors have declared no conflict of interest.
: This work was conducted under license of the Ethical Committee of the Agricultural Office of the Canton Bern (Switzerland). Ringing permits were provided by the Swiss Federal Agency for Environment, Forests and Landscapes and the Swiss Ornithological Institute (Sempach, Switzerland).
: Data used in this study is available in the Excel file provided as supplementary material.