Squirrel disaster recovery

I noticed that we had a lot of squirrels in our backyard this year, but until the leaves fell, I never realized how many were living in our giant tree. I can make out 3 nests in this picture, but there are at least 6 that I could find.
I love squirrels! They are so funny to watch. Pretty much any time I look out my back windows, I can see at least one running around.

We had a pretty severe snow storm last week, and one of the nests fell to the ground. A few days later, I looked out to see this:



At least 2 squirrels were rebuilding their nests (or perhaps expanding/reinforcing their current nests) by using debris from the fallen nest! They were doing this most of the day yesterday.