Have you ever had a sleep over? If you have, how much sleep did you actually get? Well, Biddy and Bruin have decided to have a sleep over together in the Treehouse. They decided to do this after talking about what makes birds fly south, and what makes bears fall asleep for the winter. Understand, it's been years since Bruin has hibernated for the winter. This year he likely will not hibernate either. The treehouse is warm all winter long. And if it's warm, a bear has no need to fall asleep for the winter. In fact, it's so warm... he thinks he could actually stay up all night.... at the sleepover.