Great Crested Flycatcher

A Great Crested Flycatcher has been visiting the backyard lately.

It's been going in and out of our nesting box.  

Unfortunately, something climbed up an unclimbable pole and opened up the sides of the nesting box.  While fixing it, we found 4 little brown striped eggs.  (see here)  Hopefully the parents will come back and take care of them.