The vocal ability of birds has inspired poets and musicians, from Chaucer to Wordsworth, from Handel to Respighi. Birdsong can be a natural phenomenon of intense beauty.
And their songs have been shaped by their environment, just as the rap musician of New York delivers a different "tune" to the yodeller in the Swiss mountains. The musical detail would have impressed the great composers. The nightingale, for example, holds up to 300 different love songs in his repertoire. The canary may take 30 mini-breaths a second to replenish its air supply. The cowbird uses 40 different notes, some so high we can't hear them. The chaffinch may sing his song half a million times in a season.
Indeed, British musician David Hindley slowed bird song down and discovered parallels between the skylark's blizzard of notes and Beethoven's Fifth Symphony; between the woodlark's mind-numbingly complex song and J.S.Bach's 48 Preludes and Fugues. It changes its tune according to the rules of classical sonata form.
Song allows the bird to "speak" better than and other family of creatures. It is the perfect medium for communicating over long distances, or when it is hard to see the singer - and the audience: for example at night or in dense vegetation.
Whatever the habitat, birds have a way of singing into it. When a bird sings, it can always be heard, even after it has moved out of sight. Sound travels in all directions; it can penetrate through or around objects.
