Spatio-Temporal Dynamics of the Post-Fledging Dependence Period in Juvenile Booted Eagles in the Altai-Sayan Region, Russia

<jats:p>The movements of five juvenile Booted Eagles (Hieraaetus pennatus) during the post-fledging dependence period (PFDP) were studied using GPS/GSM tracking. The Booted Eagles were tagged at two breeding territories in the Altai-Sayan region of Russia between 2014 and 2021; 2024 locations from the birds were obtained during the PFDP. The PFDP, from leaving the nest until the start of migration, lasted from 40 to 55 days. The area of home ranges during the PFDP, defined as the minimum convex polygon (MCP 100%), varied from 0.05 to 191.23 km², averaging (n=5) 52.25±81.33 km², while the core area (KDE 50%) varied from 0.0008 to 9.97 km², averaging (n=5) 2.16±4.37 km² (Median – 0.15 km²).</jats:p>