Sound files in .1/birds
             bluejay2.au -- 
             chickad1.au -- 
             chickad2.au -- 
                crow3.au -- 
             kingbird.au -- 
           kookaburra.au -- kookaburra.au
           other_bird.au -- other_bird.au
             prpmartn.au -- 
      red_wattle_bird.au -- red_wattle_bird.au
             saypheob.au -- 
             vrflycat.au -- 
            whip_bird.au -- whip_bird.au
