There's a 'squirrel tail' tree in the Garden (where I work). Apparently an elderly or ill squirrel crawled into a favorite hole, leaving only an emergent tail to mark a final resting place.But looking for a red-shouldered hawk nest nearby (the squirrel tail tree was a landmark), I saw a pair of squirrels scampering into a hole higher up in the tree.
They poked their heads out enough for some decent photos.It was nice to see squirrels taking advantage of cavities in trees, for nesting spots.