Amy Lowell - Hoar-Frost

In the cloud gray mornings
I heard the herons Flying
And when I came into my garden,
My silken outer-garment
Trailed over withered leaves.
A dried leaf crumbles at a touch,
But I have seen many Autumns
With herons blowing like smoke
Across the sky.

Amy Lowell

http://www.poemhunter.com/poem/hoar-frost/