This guy!  I glanced out the back window to see the night heron with a fish in it's mouth standing on the edge of the pool.  Then he DROPPED the fish into the pool by accident (unless he was trying to give it a bath).....looked for the fish and then followed it as it swam along the edge, plucked it out of the water and dropped it on the grass!  Wish I had been able to videotape it, but wow, what fun to watch.  Now the kids are probably going to be grossed out because there was a fish in the pool.....
National Geographic in our backyard!  :)