My son and I got our pond up and running the other day and
this duck came in for a swim! She does a lap or two then preens her feathers on the rocks. I never really thought of our little pond as being fit for ducks but this one seems right at home.
Here's my drawing of our filter. It's big for our pond but the man at the store said "you can't over filter" so we went with the big one.

