External Expert for the European Commission, since 2019
Expertise for ANSES, 2022-2024 (avian botulism)
Expertise for the GIP Massif Central, 2023
Expertise for the PNR du Pilat, 2022
Expertise for the Fondation pour la Recherche sur la Biodiversité, 2019 (biodiversity indicators)
Expertise for UMS PatriNat (MNHN), 2017, 2021 (bird indicator, protected area effectiveness)
USGS National Wildlife Health Center, 2013-2015 (avian botulism)
Every1Counts Project, 2024-2025
Scientific Committee Birds@farmland Initiative, funded by the European Commission (2023)
Member of GT Agriculture - PNA Chiropteres
Member of GT FRB-ONB "Changement Climatique"
Member of GT FRB "Préjudice Ecologique"
Member of the GdR Ecostat (national research group on Statistical Ecology) - Former animator of the theme on Citizen Science
Member of the CiSStat Group on Statistical Methods for Citizen Science data
Member of the Chaire Modélisation Mathématique et Biodiversité (MNHN/Ecole Polytechnique/Véolia)