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Figure 1

From: Quantification and characterisation of commensal wild birds and their interactions with domestic ducks on a free-range farm in southwest France

Figure 1

Environment of the study farm. (a) Geographic location of the farm (red circle) compared to locations of outbreaks and cases in poultry (purple) and wild birds (red) of highly pathogenic avian influenza (HPAI) from October 2016 to February 2022. Base map is the interactive HPAI map from Plateforme ESA accessible on https://shiny-public.anses.fr/shiny-vsi/ (April 2022). (b) North aerial view of the farm (drone photography taken by the authors). (c) Map of the farm showing the natural environment surrounding duck foraging areas. Unlabelled buildings are private houses that are not part of the farm. Observation points are marked on each studied area by type of surrounding environment (shape) and time of day (colour), with their field of view indicated as lines delimitating the angle connected by curved line (circle when a point is used for two areas). The map is produced using QGIS31 version 3.6.1-Noosa, with a base map from Google, Image © 2022 CNES/Airbus, Maxar Technologies.

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