Why do birds sings?

Hi everyone, i would love to share my experience this morning. Am a poet lover, but what struck me out of bird was the songs the birds where singing and i remembered the poem " why do birds sings" by Robert Williams.

Let poets piece prismatic words,
Give me the jewelled joy of birds!

What ecstasy moves them to sing?
Is it the lyric glee of Spring,
The dewy rapture of the rose?
Is it the worship born in those
Who are of Nature's self a part,
The adoration of the heart?

Is it the mating mood in them
That makes each crystal note a gem?
Oh mocking bird and nightingale,
Oh mavis, lark and robin - hail!
Tell me what perfect passion glows
In your inspired arpeggios?

A thrush is thrilling as I write
Its obligato of delight;
And in its fervour, as in mine,
I fathom tenderness divine,
And pity those of earthy ear
Who cannot hear .
.
.
who cannot hear.

Let poets pattern pretty words:
For lovely largesse - bless you, Birds!