ODD BEHAVIER

Had to go to the eye doctor today.  Cataracts!  No wonder I can't see.  Anyway there is a pond by his office, and these ducks are there.  They were in large huddles, going round and round in circles, with their heads down in the water.  We wondered if they were trying to stay warm, as it was freezing.  But now that I have had a closer look, I believe that they are Shoveler Ducks, and they are feeding in this way.  I had never seen this before.  Extra