This is a story of a plastic bag and a bird - a cautionary tale about taking care of our environment as well as being a wonderful showcase of some of the famous sights of Sydney.

'One day, a long time ago when I lived in Kirribilli, Sydney, I packed a lunch and set out to walk to the Botanic Gardens . . .

I crossed the harbour bridge then climbed down to Circular Quay. I walked beside the sea wall, past the Opera House until I reached the Botanic Gardens.