I was just wondering.....are these Racoons up in the tree or are they borrowing
insome part of the tree? Racoons don't usually go up into trees very far unless they have been chased up one so I guess I can't really picture them hanging around in a tree unless they have decided to make some kind of a home
inside the tree. They usually do that kind of thing in a hole near the bottom of the tree or a rotted part a little further up.
If they are up in the tree could it be that a neighborhood dog be chasing them up the tree? I guess my only other idea would be that they have someone's attic staked out for entry.