A Grand Orchestra.

I hear the birds chirp
 not one but many in the garden
 one whistles with  a long draw
 the other tweets with a short  scope
another one calls in a loud voice
 thus goes the noise rhythmic though
 the one stops  for a pause
 the other one picks up with a force
 the third one waits for its turn
 starts its notes in a happy tune
 the orchestra in my garden gains momentum
 as the percussionists join the birds
 the insects and the bees play the drums
a grand event free of cost.