Possibility of night activity shift of Eurasian red squirrel (Sciurus vulgaris)


  • Yushin Asari Department of Agro-environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
  • Tatsuki Shimamoto Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan




forage, nocturnal activity, sensor camera


We investigated activity patterns of wildlife by using 28 camera traps from June 2021 to June 2022 in a forest in eastern Hokkaido, Japan. Sciurus vulgaris is generally known as a diurnal species. However, two photos recorded the night activity of this species in March 2022. One photo showed something resembling a pine cone in a squirrel’s mouth. Sciurus vulgaris might shift the timing of their activity patterns to avoid predators such as Vulpes vulpes and/or to forage food when scarce.


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How to Cite

Asari, Y., & Shimamoto, T. (2023). Possibility of night activity shift of Eurasian red squirrel (Sciurus vulgaris). Journal of Wildlife and Biodiversity, 8(1), 421–426. https://doi.org/10.5281/zenodo.10001413