Remember that I used my patio umbrella as shade for the chickens after the oak trees were cut down?  Alex put the umbrella back for me and left it open, and it was a bit windy the other day...I found it in the corner of the yard, caught on the fence.  The poor koi were evidently a bit traumatized - they didn't want to eat, and were hiding at the bottom of the pool after I rescued the umbrella.