About the Authors

Ivan Norscia

Affiliation Centro Interdipartimentale Museo di Storia Naturale e del Territorio, Università di Pisa, Calci, Pisa, Italy

Elisabetta Palagi

betta.palagi@museo.unipi.it

Affiliations Centro Interdipartimentale Museo di Storia Naturale e del Territorio, Università di Pisa, Calci, Pisa, Italy, Unità di Primatologia Cognitiva, ISTC-CNR, Roma, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: IN EP. Performed the experiments: IN EP. Analyzed the data: IN EP. Contributed reagents/materials/analysis tools: IN EP. Wrote the paper: IN EP.