Not just a pub name

I saw this swan a week or so ago and told my family, who didn't believe me. The words goose and cygnet were heard.
Ha! I am so vindicated.
A real black swan, swimming along the Ruhr in the company of some normal (and so boring, when you've seen a black one) white ones, who were trying very hard to disdainfully ignore their swarthy mate, and lots of ducks who don't care who they swim with.