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Unravelling migration connectivity reveals unsustainable hunting of the declining ortolan bunting

Frédéric Jiguet 1 Alexandre Robert 1 Romain Lorrillière 1, 2 Keith Hobson 3 Kevin Kardynal Raphaël Arlettaz Franz Bairlein 4 Viktor Belik Petra Bernardy José Copete Michel Czajkowski Svein Dale Valery Dombrovski Delphine Ducros 1, 5 Ron Efrat 6 Jaanus Elts Yves Ferrand 7 Riho Marja Simonas Minkevicius Peter Olsson Marc Perez Markus Piha Marko Raković Heiko Schmaljohann 8 Tuomas Seimola Gunnar Selstam Jean-Philippe Siblet 9 Michał Skierczyńki Alexandr Sokolov Jan Sondell Caroline Moussy 1
1 CESCO - Centre d'Ecologie et des Sciences de la COnservation
2 ESE - Ecologie Systématique et Evolution
3 UWO - University of Western Ontario
4 Institute of Avian Research "Vogelwarte Helgoland"
5 CEFS - Unité de recherche Comportement et Ecologie de la Faune Sauvage
6 BIDR - The Jacob Blaustein Institutes for Desert Research
7 CNERA Avifaune Migratrice
8 Institute for Avian Research
9 PatriNat - Patrimoine naturel
Abstract : In France, illegal hunting of the endangered ortolan bunting Emberiza hortulana has been defended for the sake of tradition and gastronomy. Hunters argued that ortolan buntings trapped in southwest France originate from large and stable populations across the whole of Europe. Yet, the European Commission referred France to the Court of Justice of the European Union (EU) in December 2016 for infringements to legislation (IP/16/4213). To better assess the impact of hunting in France, we combined Pan-European data from archival light loggers, stable isotopes, and genetics to determine the migration strategy of the species across continents. Ortolan buntings migrating through France come from northern and western populations, which are small, fragmented and declining. Population viability modeling further revealed that harvesting in southwest France is far from sustainable and increases extinction risk. These results provide the sufficient scientific evidence for justifying the ban on ortolan harvesting in France.
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Frédéric Jiguet, Alexandre Robert, Romain Lorrillière, Keith Hobson, Kevin Kardynal, et al.. Unravelling migration connectivity reveals unsustainable hunting of the declining ortolan bunting. Science Advances , American Association for the Advancement of Science (AAAS), 2019, 5 (5), pp.eaau2642. ⟨10.1126/sciadv.aau2642⟩. ⟨mnhn-02552952⟩

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