Bird's Nest

What I do not know,
I do not know
What else is there to expect
For on a whim of a chance of love
Did the bird's heart make a nest

Twig of twine and thistle,
thistle from below
Neatly put together to form a sort of home
But everything man or otherwise made

Does not stand the test of time,
time after time
And now the birds nest has fallen
Now the love has long grown cold
One more thing I do not know

Never know