4. Discussion
The results of this study highlight significant temporal variations in the home range of pregnant wild boar females before, during, and after births. The home range of both females was significantly reduced during the birthing period, consistent with previous research indicating that female wild boars adopt more restricted movement patterns near births to ensure safety and resource accessibility for their offspring [
4,
46]. The reduction in home range size by over 50% during the birthing phase confirms that parturient females limit movement to minimize predation risk and energy expenditure [
9,
19].
These findings are consistent with the hypothesis that spatial requirements and behaviour differ between sexes because of reproductive strategies and body size allometry [
11]. While male wild boars often exhibit expansive home ranges (870 - 1,750 ha) to maximize mating opportunities, females prioritize spatial stability, particularly during reproduction [
5]. Our telemetry data showed that Farukka maintained a larger home range before birth compared to Hermione (275.0 ha vs. 121.6 ha at MCP100), which may indicate individual variation in dominance rank or foraging strategy. This supports previous studies that suggest dominant females tend to occupy larger territories with higher-quality food resources [
14].
After births, both individuals expanded their home ranges, although this did not return to pre-birth levels, indicating a gradual reintroduction of movement associated with offspring development [
15,
16,
47]. However, Hermione exhibited greater post-birth expansion than Farukka, possibly due to different resource distribution strategies; this divergence may be influenced by intraspecific competition or maternal experience, as younger or subordinate females may adopt more mobile foraging tactics to compensate for reduced access to high-quality habitats [
17].
The Jacobs’ Index analysis revealed distinct habitat selection patterns across the three phenological periods. Before birth, both females exhibited a preference for forested environments, with Farukka selecting croplands (D = 0.0430) more than Hermione (D = -0.3376, p < 0.05). This suggests that croplands were important food sources prior to births, which is consistent with findings that pregnant wild boars increase their intake of high-energy foods to support foetal development [
48]. However, during the birthing phase, both individuals significantly reduced their use of croplands, likely due to increased human disturbance and a preference for secluded areas [
20].
One of the most striking results was the strong selection for riverside vegetation during births (D = 0.6918 for Farukka and D = 0.6748 for Hermione, p < 0.001); these findings confirm that dense riverside habitats offer optimal cover and reduced predation risk for neonates, as observed in other studies on ungulate births sites [
13]. Riparian areas likely provide thermoregulation benefits and proximity to water, crucial for lactating females. However, after birth, Farukka abandoned riparian areas (-0.3440, p < 0.01), whereas Hermione continued selecting them (D = 0.5590, p < 0.001). This suggests individual variability in post-birth habitat use, possibly influenced by offspring vulnerability, predator pressure, or maternal investment strategies.
The post-birth phase revealed divergent habitat use strategies: Farukka selected permanent meadows (D = 0.5235, p < 0.001), while Hermione strongly preferred shrubland (D = 0.8137, p < 0.001). Hornbeam forest use decreased for Hermione (p < 0.01), while Farukka continued to rely on it. Crops were avoided by both individuals, likely due to their seasonal availability (May–June) when young boars require alternative food sources. These differences may reflect their social hierarchy: Hermione, probably the dominant female, exploited shrubland areas that provide both cover and protective structure for offspring, while Farukka, being subordinate, was more frequently observed in permanent meadows, possibly as a strategy to reduce direct competition. Similar patterns have been observed in other social ungulates, where dominance influences access to safer or higher-quality habitats [
49,
50]. These results highlight the complexity of maternal habitat selection in wild boars, demonstrating adaptive flexibility shaped by both environmental conditions and social status [
8], and suggest that the two females adopt distinct post-birth strategies to optimize resource use and minimize competition.
Our results indicate that the post-birth divergence in habitat use is closely linked to the social hierarchy within the family group. Rather than focusing solely on the specific environments selected, the contrast between the two females should be interpreted as a reflection of dominance-driven strategies: Hermione, as the leading sow, had priority access to habitats offering structural protection and concealment for neonates, whereas Farukka, constrained by her subordinate status, adapted by exploiting more accessible areas with reduced cover. This interpretation is consistent with previous findings that wild boar social units are organised along matrilineal hierarchies, where dominant females exert a disproportionate influence on spatial organisation and habitat access [
51,
52]. Similar processes have been reported in other ungulates, where maternal rank determines access to habitats that maximise offspring survival and minimise predation risk [
49,
53]. In our case, the divergent strategies of Hermione and Farukka illustrate how reproductive needs interact with social asymmetries to produce differentiated habitat selection patterns, emphasising the importance of considering intra-group dominance relationships when interpreting fine-scale spatial behaviour in wild boar.
Our analysis of spatial niche breadth (Levin’s index) and niche overlap (Pianka’s index) confirm that maternal wild boars exhibit dynamic spatial strategies depending on reproductive phase. Before birth, spatial overlap between the two females was moderate (Ojk = 0.46), but during births, overlap increased significantly (Ojk = 0.95). This near-total overlap implies that both individuals shared similar births sites, likely due to limited availability of optimal birthing habitats [
12]. However, after birth, spatial overlap declined drastically (Ojk = 0.19), suggesting that post-births dispersal helps reduce intra-group competition for resources [
17].
The reduction in spatial niche breadth during births (L = 0.10 - 0.15) further supports the idea that wild boar females prioritize a more localized and protective environment for neonates; this pattern is commonly observed in other socially structured ungulates, where females adjust movement patterns to balance protection and resource availability for offspring [
15].
Understanding maternal home range dynamics and habitat selection has crucial implications for wild boar management in agricultural landscapes. Given that crop damage is primarily caused by females with offspring, identifying preferred birthing habitats can inform targeted mitigation strategies. Our findings suggest that riparian areas serve as key births sites, and management plans should focus on balancing conservation efforts with potential conflicts in these regions. Crop depredation risk is highest before births, when females utilize agricultural fields more extensively; strategies such as non-lethal deterrents or seasonal exclusion zones could reduce human-wildlife conflicts.
Post-birth dispersal patterns indicate that young wild boars remain with their mothers in resource-rich areas, making localized control efforts more effective during this period.
These findings support a spatially explicit approach to wild boar management, emphasizing female movement patterns as key drivers of human-wildlife interactions.