This is what the tree looked like two weeks ago. Since then, it has yielded to the gnawing of our giant Sherwood rodents, who have since moved on to another tree. You can visit a slide show of their work over time that is being updated every few days at MySherwoodglen.com.
If you want to find out more about the lives of beavers as they prepare for winter, you can check out the David Attenborough video below.