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(A) Location of Torre Ribera, the magpies sampling area (red point) within Segrià region (in gold), Catalonia (dark grey) and Spain (light grey). (B) Zoomed area with Torre Ribera sampling area (red point), 10 km buffer area (dark red circle), location of the first positive northern goshawk (blue square) and Vallcalent Wildlife Recovery Center (WRC) (green triangle).
