RT Journal Article T1 Unmanned aircraft systems as a new source of disturbance for wildlife: A systematic review A1 Mulero-Pázmány, Margarita Cristina A1 Jenni-Eiermann, Susanne A1 Strebel, Nicolas A1 Sattler, Thomas A1 Negro, Juan-José A1 Tablado, Zulima K1 Aviones sin piloto K1 Fauna AB The use of small Unmanned Aircraft Systems (UAS; also known as “drones”) for professional and personal-leisure use is increasing enormously. UAS operate at low altitudes (<500 m) and in any terrain, thus they are susceptible to interact with local fauna, generating a new type of anthropogenic disturbance that has not been systematically evaluated. To address this gap, we performed a review of the existent literature about animals’ responses to UAS flights and conducted a pooled analysis of the data to determine the probability and intensity of the disturbance, and to identify the factors influencing animals’ reactions towards the small aircraft. We found that wildlife reactions depended on both the UAS attributes (flight pattern, engine type and size of aircraft) and the characteristics of animals themselves (type of animal, life-history stage and level of aggregation). Target-oriented flight patterns, larger UAS sizes, and fuel-powered (noisier) engines evoked the strongest reactions in wildlife. Animals during the non-breeding period and in large groups were more likely to show behavioral reactions to UAS, and birds are more prone to react than other taxa. We discuss the implications of these results in the context of wildlife disturbance and suggest guidelines for conservationists, users and manufacturers to minimize the impact of UAS. In addition, we propose that the legal framework needs to be adapted so that appropriate actions can be undertaken when wildlife is negatively affected by these emergent practices. PB Public Library of Science (PlosOne) YR 2017 FD 2017 LK https://hdl.handle.net/10630/33161 UL https://hdl.handle.net/10630/33161 LA eng NO Mulero-Pázmány M., Jenni-Eiermann S., Strebel N., Sattler T., Negro J.J., Tablado Z. (2017). Unmanned aircraft systems as a new source of disturbance for wildlife: A systematic review. PLoS One 12: 1–17. https://doi.org/10.1371/journal.pone.0178448 NO Part of this study was conducted within the Projects Aeromab, (Andalusia Government, Project for Excellence, 2007, P07-RNM-03246) and Planet (European Commission 7th FP Grant Agreement 257649) granted to JJN, Doñana Biological Station, CSIC. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 19 ene 2026