Tea Drinking Swan

Out with the '2nd Saturday Strollers Walking Club' today.  We walked from Harrison Park, up the canal, through The Heriot Watt Campus and up to The Riccarton Inn.  Then along to The Redhall Walled Garden open day.
We had a picnic lunch at the loch on the campus where we met this swan who was interested in drinking tea.  He had 2 cups of our friends tea and was eyeing this cup up too.  Not sure if this is a healthy habit or not?