Funding for this research was provided by:
Vetenskapsrådet (621-2013-4839, 349-2007-8690, 621-2013-4361)
National Geographic Society (WW-034ER-17)
Det Frie Forskningsråd (DFF-6108-00597)
Text and Data Mining valid from 2018-10-15
Received: 27 April 2018
Accepted: 26 August 2018
First Online: 15 October 2018
: No permission was needed to capture willow warblers (non-Red Data book species) in Russia, according to the Federal Law on Animal Kingdom. An Ethical permission from Lund-Malmö Djurförsöksetiska Nämnd (M72:15) was given to SÅ for GLS tracking of willow warblers in Sweden.
: Not applicable.
: The authors declare that they have no competing interests.
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