One day in October, brown bears went into their dens to sleep throughout the winter. In much of northern Europe, people have noticed that the bears start to wake up again at the same day every year: 14th of April. Is this really true, and how do the bears know when to wake up? Join this webinar, and I will tell you why. You will also learn what the bears actually do in their den during the winter sleep, and what makes bear able to sleep for so long.

Presenter: Paul Eric Aspholm