Funding for this research was provided by:
National Geographic Society
Article History
Received: 6 April 2018
Accepted: 19 December 2018
First Online: 10 January 2019
Compliance with ethical standards
:
: This study was approved by the Animal Welfare Officer at the German Primate Center (DPZ) and by the Argentine Administration of National Parks (permit number: NEA 158 bis Rnv 5), and adhered to the legal requirements of Argentina. The authors declare no conflict of interest.