Bear sightings inside cities have been increasing over the years in Japan, some of them even entering buildings like a school. Many suggest this is due to decrease in suitable food for bears such as acorns and other nuts that usually sustain them through autumn. When temperature rises and forest ecosystem shifts, these food sources become scarce, and bears wander closer to human settlements in search of calories before winter.
According to NHK news, recent data highlight just how sharply winter bear activity has increased. In earlier years, December sightings typically hovered between 30 and 50 cases, but this number jumped dramatically to 284 in fiscal 2023, and remained high at 271 in fiscal 2024. A similar trend appeared in January, when reports that were once no more than around 30 surged to 63 in fiscal 2023 and then to 184 in fiscal 2024.
Bears normally enter hibernation in December, relying on body fat accumulated during autumn. However, when persimmons and other fruit remain unharvested in residential areas, bears delay hibernation and continue roaming. Many that ventured into towns in late 2023 encountered easily accessible human food, which may have conditioned them to return again the following year.
Overall, experts caution that unless communities take active steps to remove leftover fruit and other attractants, winter bear encounters may continue to rise. As bears grow more accustomed to finding food near homes, the boundary between wildlife and residential areas becomes increasingly blurred, emphasizing the need for coordinated efforts to keep both people and animals safe.
