The Black Swan (Cygnus atratus) is a well known, and even iconic Australian bird. It is rather common here, depending on where you live. Sadly, I don't see them at home, but frequently do on visits to Canberra (and Newcastle). It's always a thrill to see them.
They're common in Tasmania too, which is where I took these next two shots.
Our black swans have a call and so I was surprised to learn that the European white swan was mute when I went to Ireland in 2010. Interesting to learn on wiki that New Zealand had a subspecies of black swan, but that it was sadly hunted to extinction.