Where did all the bees go?

Quick question for you all - I was walking my pup through the park earlier this evening and I noticed that there are still bees swarming the couple of trees in our park that I'm pretty sure are responsible for the infestation in my house. <br><br>It makes me want to hope that bees are still in the trees, that they haven't all moved to the warmer spot on the south side of the house and that they won't all come inside my house. <br><br>Also, I've been curious about whether bees hibernate in the winter and if so, are they all in the trees, or will some still remain in the house if they've made the trek inside?