Backgound Throughout its range, red deer is a well-studied species. In Italy the species occupies two ecologically different ranges: the Alps and the Apennine. Although several studies have described spatial behaviour of red deer in the Italian Alps, no data are available for the Apennine population. Results Spatial behaviour of 13 deer from Northern Apennine range was analysed for the first-time using GPS-GSM telemetry, from 2011 to 2017. Red deer displayed two different strategies coexisting in the population, i.e., migratory and stationary. Females tend to migrate more than males. We found a high level of inter individual variability in the date of migration/return, while each migratory deer is very conservative during the study period. Migration ranges are on average 12±4.2 km far apart from the resident range. Both migratory and resident deer displayed high site fidelity. No switch from migratory to stationary strategy was observed for any deer during the study period, which however could have been too short to detect any switch. At management level, a spatial mismatch was found between deer range and management units (districts) in 44.4% of the cases. Merging the districts belonging of each province to obtain an area of approximately 1.000 km 2 would partially solve such spatial mismatch reducing it to 22%. Conclusions Despite the low sample size, these results can provide guidance for future management actions. An in-dept study with a higher sample size is however required to better understand and manage the red deer Apennine population.

Background Throughout their range, red deer are a well-studied species. In Italy, this species occupies two ecologically different ranges: the Alps and the Apennines. Although several studies have described the spatial behaviour of red deer in the Italian Alps, no data are available for the Apennine population. Results The spatial behaviours of 13 deer from the Northern Apennines range were analysed for the first time using GPS-GSM telemetry from 2011 to 2017. Red deer displayed two coexisting strategies, i.e., migratory and stationary. In our sample, females tended to migrate more than males. We found a high level of interindividual variability in the date of migration/return, while each migratory deer was very conservative during the study period. The migration ranges were on average 12 ± 4.2 km from the resident range. Both migratory and resident deer displayed high site fidelity. No switch from the migratory to stationary strategy was observed for any deer during the study period; however, the period could have been too short to detect any switch. At the management level, over 18 management cycles occurred during the study period, and a spatial mismatch was found between deer range and management units (districts) in 38.9% (7) of the cases. Merging the districts belonging to each province to obtain an area of approximately 1000 km2 would partially address such spatial mismatch, reducing its occurrence to 22%. Conclusions Despite the small sample size, these results can guide future management actions. However, an in-depth study with a larger sample size is required to better understand and manage the red deer Apennines population.