The findings suggest that these months should be treated as "critical conservation windows", with minimal human activity inside Hangul habitats. The study also detected elevated stress hormones in both male and female Hangul during the breeding season. Researchers also found that Hangul's reproductive cycle differs from that of red deer living in northern Europe and Arctic regions. “As a mixed feeder, Hangul has access to food for a longer period than grazing deer, allowing females to have a relatively extended breeding season. It warns that climate change, shifting vegetation patterns and increasing human activity could disrupt this delicate timing, affecting breeding success in future.