Here are a few more images of the dark/heavily-marked  Snowy Owl at National Airport, taken from Gravelly Point, on Feb. 18. 2014.  This bird is most like a juvenile female.  The other, lighter-marked Snowy at the airport, has not been seen for some time. 

               I wonder how long these Snowy Owls will hang around.
         It's been such a big treat to have them here for the winter !!