Who needs reeds, horns and strings when you have the Corowa Bird Chorus!
This morning I stood under a silver birch and whistled back a tune to a blackbird high in the tree. He whistled an impro on the original theme - and I tried to upstage him with my tuneful reply, but my reed broke on the last note (too high) and things went silent for a moment. Then he replied, again extending the theme, but this time ending with a deliberate squawk of sorts! "Ha," I said in my human speech, "you win!" For wit and technique he was incomparable.