Funding for this research was provided by:
Text and Data Mining valid from 2020-02-18
Received: 24 October 2019
Accepted: 7 February 2020
First Online: 18 February 2020
Ethics approval and consent to participate
: We did not employ invasive techniques for this census; no primates were captured or handled, and we followed the ethical guidelines provided by the Association for the Study of Animal Behaviour, and University of Copenhagen Good Research and Publication Practice. Research adhered to the legal requirements of the Republic of Indonesia, and the local requirements of Baluran National Park.
: Not applicable.
: The authors declare that they have no competing interests.