I put out all my birdseed.  I was out of all my different kinds–regular, sunflower, suet and thistle.  A nuthatch immediately found the birdseed (regular) on the platform I laid seed on.  I put fresh thistle for the goldfinch.  My wife said they all migrated away.  I suspected the thistle (which I had bought months ago) had gone stale.  I will see who is right.  I almost never run out of feed for them.  It was only a day so they were not out of feed too long.  Anyway, I now will continue to watch the visitors that come to my feeders.