As a conservation biologist and a bird ringer, I am mainly concern about the influence of global changes on biodiversity. My work focuses on understanding how macro-ecological processes drive spatial dynamic patterns of populations and communities and especially about birds and more often with data provided by citizen sciences schemes such as the French Breeding Bird survey (FBBS), Birdlab, the French Constant Effort Ringing Schemes. And more recently I joined join the Chiro team to work on the data about bats provided by the citizen schemes “Vigie-Chiro” and provided by the catching program.