I'm not sure where it originally came from
but I think this photo was by Davebr according to this: http://www.b3ta.com/board/4206482
( Megalowho? feeds beefburgers to swans, Sun 12 Feb 2006, 17:13, archived)

ha ha!
the evidence is clear for all to see
( executiverocker is going to post a thread on Reddit, Sun 12 Feb 2006, 17:19, archived)