About the Authors

Jacques Gautrais

jacques.gautrais@univ-tlse3.fr

Affiliations Centre de Recherches sur la Cognition Animale, UMR-CNRS 5169, Université Paul Sabatier, Toulouse, France, CNRS, Centre de Recherches sur la Cognition Animale, Toulouse, France

Francesco Ginelli

Affiliations Service de Physique de l'État Condensé, CEA-Saclay, Gif-sur-Yvette, France, Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Roma, Italy, Institute for Complex Systems and Mathematical Biology, King's College, University of Aberdeen, Aberdeen, United Kingdom

Richard Fournier

Affiliations Laboratoire Plasma et Conversion d'Energie, UMR-CNRS 5213, Université Paul Sabatier, Toulouse, France, CNRS, Laboratoire Plasma et Conversion d'Energie, Toulouse, France

Stéphane Blanco

Affiliations Laboratoire Plasma et Conversion d'Energie, UMR-CNRS 5213, Université Paul Sabatier, Toulouse, France, CNRS, Laboratoire Plasma et Conversion d'Energie, Toulouse, France

Marc Soria

Affiliation Institut de Recherche pour le Développement (IRD), UMR EME, La Réunion, France

Hugues Chaté

Affiliation Service de Physique de l'État Condensé, CEA-Saclay, Gif-sur-Yvette, France

Guy Theraulaz

Affiliations Centre de Recherches sur la Cognition Animale, UMR-CNRS 5169, Université Paul Sabatier, Toulouse, France, CNRS, Centre de Recherches sur la Cognition Animale, Toulouse, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MS GT. Performed the experiments: MS GT. Analyzed the data: JG FG RF SB HC. Wrote the paper: JG FG RF SB HC GT. Designed the software used in analysis: JG RF SB.