Investigation into the illegal killing of a tagged Eurasian Curlew

• Published in: Forensic Science International: Animals and Environments
• Main Authors: Jiguet, Frédéric, Duby, Dylan, Bourgeois, Aude, Robin, Frédéric, Rousseau, Pierre, Nijs, Griet, Fuchs, Jérôme, Lorrillière, Romain, Bocher, Pierrick
• Other Authors: Centre d'Ecologie et des Sciences de la COnservation (CESCO), Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Muséum national d'Histoire naturelle (MNHN), Ligue pour la Protection des Oiseaux (LPO), Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), LIttoral ENvironnement et Sociétés (LIENSs), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2020
• Subjects: Endangered species; GPS tracking; Hunting action; Numenius arquata; Poaching; X-ray imagery; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology; Eurasian Curlew
• Online Access: https://hal.science/hal-03767003; https://hal.science/hal-03767003/document; https://hal.science/hal-03767003/file/Jiguet%20et%20al.%20-%202021%20-%20Forensic%20Science%20International%20Animals%20and%20Environments%20-%20Investigation%20into%20the%20illegal%20killing%20of%20a%20tagged%20Eura.pdf; https://doi.org/10.1016/j.fsiae.2021.100005

International audience On 9 August 2020, one of 10 tagged Eurasian curlews we tracked with GPS died on Ile Madame, France, and we managed to collect the corpse for further analyses. Our investigation proved that the bird was shot, as x-ray imagery revealed a single lead ball under the bill skin, while the bill had been recently broken. The study of the GPS tracks during the last days and hours of the bird’s life indicated a normal foraging activity during the previous night. The bird moved to the high tide roosting bank of Ile Madame during the night, and was shot to death at sunrise. Directed intentionally or not towards the curlew, the shot was the cause of the death. The Eurasian Curlew is endangered to extinction, and as such is not huntable anymore across Europe. With an adult survival estimated at 92 %, any additional adult mortality can have a noticeable impact on population dynamics, hence on extinction risk. For the sample of 10 adult curlews we tagged, this single additional mortality by illegal shooting theoretically doubles the annual mortality rate. The tagged individual belonged to the small threatened Belgian breeding population estimated to count 170–230 breeding pairs.